Introduction
In the late third millennium b.c.e., metallurgy began to enter China from the Eurasian Steppe. In the second millennium, an indigenous metallurgical tradition took form at Yanshi Erlitou (ca. 1750–1530) on the Central Plains of Henan Province.Footnote 1 This new tradition was distinctive both in terms of the casting technology and the contents of the alloy. As A. M. Pollard et al. have stated,
Although, in all probability, bronze technology was introduced to China from the Steppe, the bronze-making traditions that emerged were distinct from those in the rest of Eurasia. The products of the many diverse bronze-making groups within China shared a combination of technical features unique to the area, namely an almost exclusive concentration on complex casting using decorated ceramic multiple-piece molds (rather than a combination of casting, forging and cold working), and the addition of lead to the predominant alloy of tin and copper.Footnote 2
That is, a new, indigenous method of casting bronze, which was different from that introduced from the Steppe, was created after the introduction of metallurgy. This method of casting using piece-molds was made possible by the established tradition of high-temperature kilns for the production of ceramic vessels used in ancestral offerings.Footnote 3 Moreover, the Steppe artifacts were predominantly copper or arsenic copper, whereas the bronze artifacts in the new tradition were primarily tin-bronze and used lead so that lower temperatures could be used in casting.
This new metallurgical tradition was also distinctive in the religious purpose to which it was put. Most of the metal artifacts found in the Steppe regions are small utilitarian objects, such as fishhooks, awls, and knives, or personal items, including bodily ornaments. In contrast, the bronze culture that developed on the Central Plains was focused primarily on the production of ritual vessels. As Mei Jianjun et al. have observed, “current archaeological evidence has presented a striking contrast between Northwest—North China and the Central Plains of China in terms of the uses of early metals, with personal ornaments predominating in Northwest-North China, while ritual vessels were most significant in the Central Plains of China.”Footnote 4 These vessels, like the ceramic vessels that preceded them, were used for offerings to ancestral and nature spirits.
In the following, we will discuss how this transformation in the technology and role of metallurgy took place. Traditionally, the development of bronze casting in ancient civilizations was understood in terms of social evolutionary theory. This was patterned on Darwin's theory of natural selection. The underlying assumption is that technological progress in ancient times was driven by the desire for material benefit. People preferred bronze tools and weapons because they were more effective than stone ones and that gave them an advantage over their neighbors. While the utility of bronze for weapons and tools was not entirely ignored when metallurgy entered China, we propose that the primary allure of metal was utilitarian but only in the larger—religious—sense; that is, people thought that metal could be used effectively in the performance of ritual sacrifice because of its luminosity. By using ritual artifacts made of luminous metal, the rulers could gain the approval and support of the spirits upon which they believed their lives and the welfare of their state depended.
We will first briefly discuss the cognitive association of luminosity and the divine. We will then trace the introduction of metallurgy in the Central Plains, with particular attention to the types of artifacts found at Shenmu Shimao 神木石峁 in Shaanxi Province (2300–1800 b.c.e.) and Xiangfen Taosi 襄汾陶寺 in Shanxi (2300–1900 b.c.e.) which served as intermediaries between the Steppe region and the Central Plains culture of the Mount Song region. It is widely recognized that the bronze tradition of the Central Plains was focused primarily on the production of ritual vessels. However, we will argue that this new technology was inspired in the first instance by the desire to produce metal clapper-bells (ling 鈴). The piece-mold and coring technology created to produce the hollow body of clapper-bells was then developed for ritual vessels, but this was a later development. Thus, we will examine the history and significance of clapper-bells as pottery artifacts in the Neolithic and then as bronze ones with jade clappers at Erlitou. We argue that the significance of clapper-bells at Erlitou lay in the new sound produced when jade struck against bronze. This sound was taken as a means of establishing contact with the ancestral spirits.
Luminosity and Spirituality
In ancient cultures throughout the world, translucent stones, such as jade, nephrite, turquoise, and gemstones, and shiny metals, such as gold, silver, copper, and bronze were commonly used to make religious artifacts. We propose that this is because of a conceptual association between their luminosity and ideas of spirituality or divinity. This association is not only culturally and geographically widespread, but historically persistent. For example, in European cultures, Jesus and the Christian saints are traditionally portrayed with haloes or rays of light radiating outward. Even today, rays of light are used in cartoons and animated films to signify supernatural powers. And we still wear gemstones and gold bands to sanctify our relationships. The apparent universality and historical persistence of this association suggests that it is cognitive.
According to Lakoff and Johnson, conceptual metaphors are “mappings across conceptual domains that structure our reasoning, our experiences, and our everyday language.”Footnote 5 Some conceptual metaphors are “primary” because they are “embodied”; that is, they are a consequence of our physiological nature and common experience of the world. Some examples are: AFFECTION IS WARMTH, HAPPY IS UP, SAD IS DOWN, INTIMACY IS CLOSENESS. These metaphors are part of our cognitive unconscious, and we acquire them automatically, but they are learned rather than innate. For example, we conflate affection with warm temperature from our experience of physical intimacy in infancy.
Primary metaphors are universal to the extent that we share a common physiology and experience of the world, but they are also culturally and linguistically filtered. As Maria Ortiz has explained,
[They are] part of our cognitive unconscious, inherent to the human being, a consequence of the nature of the brain, the body and the world we live in. We acquire them automatically and cannot avoid them. In the same way as physical experiences are universal, so are primary metaphors. But, in spite of being universal they are learnt and so each culture filters and adapts them in a different way.Footnote 6
Accordingly, primary metaphors should occur cross-culturally. Thus, Joseph Edward Grady identified scores of metaphors found in diverse cultures, which he took to be primary. One of these was “LIGHT IS GOOD.” He explains its cross-cultural applicability in terms of feelings of safety and fear in the presence or absence of light.Footnote 7 At a more fundamental physiological level, however, like other animals, we are physiologically attuned to the presence or absence of light, which is governed by celestial bodies; we wake when there is sunlight and go to sleep when the sun sets and the moon rises. We suggest that the association of luminous metals and stones with the spirit world is also the consequence of a primary conceptual metaphor. This primary metaphor can be rendered in Classical Chinese as: ming zhe shen ye 明者神也, “what is bright is numinous.”
This metaphor will be readily familiar to anyone acquainted with the early Chinese textual tradition. Both terms, shen and ming, have complex philological histories. Ming, “bright,” is a conventional description of ancestral and other spirits in early texts and bronze inscriptions. Even earlier, the oracle bone character for shen is a pictograph of lightning. However, the oracle bone graph was also used as a loan character meaning “spirit” (shen). Thus, the addition of the altar semantic (示) to the word meaning spirit served to distinguish the two meanings.
The source of this primary metaphor is probably a conflation of the light emitted by celestial bodies, the sun, moon, and stars, and their presumed divine power. Translucent stones and shiny metals shared this quality of luminosity. Thus, divine power was also imputed to them. Accordingly, ritual artifacts made with these materials were especially effective in communicating with the spirits.
The Introduction of Metallurgy from the Eurasian Steppes
Metal artifacts are commonly discovered in Chinese archaeological sites from around the turn of the second millennium b.c.e. The earliest such sites are in the Northwest, along Hexi 河西 corridor and the upper reaches of the Yellow River, where they are associated with the Qijia 齊家 (ca. 2300–1500) and the Siba 四垻 (or Huoshaogou 火燒溝) cultures (ca. 1900–1500).Footnote 8 However, metal artifacts have also been found in sites in the Northeast, including the Daihai 岱海 cultures of Central Inner Mongolia.Footnote 9 These regions are within a crescent-shaped cultural communication belt that was also connected with Western Eurasia.Footnote 10 Accordingly, metallurgy was not introduced at one time and place, but repeatedly over a period of time.Footnote 11
Shenmu Shimao 神木石峁 and Xiangfen Taosi 襄汾陶寺
Two major settlements, Shimao 石峁 and Taosi 陶寺, prevailed along the Yellow River at the turn of the second millennium b.c.e. and were especially important as intermediaries between the Eurasian Steppe cultures and the Songshan region in the Central Plains. The Shenmu Shimao site is in modern Shaanxi Province near the upper reaches of the Yellow River. The Xiangfen Taosi site in the Linfen 臨汾 basin of southern Shanxi province is located on the Fen 汾 River, a tributary of the Yellow River. Roughly contemporaneous, they were probably antagonistic during at least some of the long period in which they coexisted. Nevertheless, they shared many cultural features.Footnote 12
The Shimao settlement, covering approximately 400 ha., was larger in area than that of Erlitou.Footnote 13 It was walled in stone and perched on a hill above the surrounding landscape. Some of the stones in the walls have carved images from an earlier time. The topography and the use of stone for walls at Shimao contrasts with Shandong Longshan period settlements, which were generally built in river valleys and walled in tamped earth. However, the structure of its core area, with its three main walled enclosures—a palace region and inner and outer enclosures—was similar.Footnote 14 Most of the metal artifacts discovered at Shimao were not scientifically excavated, so they have no archaeological context and cannot be dated with assurance. Nevertheless, there is a clear relationship between many of these artifacts and those of the Northwestern Qijia and Siba cultures.
Taosi, further down the Yellow River, was also a regional center of great importance in this period (2300–1900). Although it shared many cultural features with Shimao, it had a closer relationship with the Central Plains cultures and was more significant as a cultural predecessor to Erlitou culture than Shimao. The site is best known for an early observatory, apparently used to mark seasonal changes by viewing the position of the rising sun. The size of the settlement, which was enclosed with tamped earth walls, approached that of Erlitou (almost 300 ha.).Footnote 15 Although the settlement hierarchy had three-levels, as opposed to Erlitou's four, many of the sub-settlements in the Taosi hierarchy were very large.Footnote 16
Six metal artifacts have been excavated at Taosi. They are all copper or arsenic copper and include a toothed huan 環-bracelet, a vessel fragment, and clapper-bell, a loop, a small flat frog-shaped artifact, and a round huan with arc-shaped perforations. The frog-shaped artifact and huan with arc-shaped perforations are unique artifacts. The loop is similar to others found in the Steppe region. We will not discuss these three artifacts further here because they do not appear to be important for understanding the development of metallurgy. However, the other three artifacts are significant in this regard. The toothed huan-bracelet, like the loop, was a personal ornament that has equivalents at Shimao and in the Qijia culture. This type of toothed disk has not been found at Erlitou, but we will argue that it is related to other artifacts found there that have a pattern of concentric circles inlaid in turquoise. Thus, it supports the hypothesis of the cultural relationship between Qijia, Shimao, Taosi, and the bronze culture of Erlitou.Footnote 17
The vessel fragment is evidence of early experimentation in casting, which also took place on the Central Plains. The clapper-bell is of key importance because it was cast using an early form of the piece-molds and coring technology developed at Erlitou, first for casting bronze clapper-bells and then for casting ritual vessels.
Toothed Huan-Bracelets
The copper huan 環 found at Taosi was affixed to a slightly larger round jade huan. The metal was arsenic copper, and it was open cast. Together, they formed a bracelet, which was worn on the arm of the occupant of the tomb. The copper huan was “toothed”; that is, it has toothlike protrusions around the rim. The outer diameter of the rim of the copper huan was 12.5 cm.; that of the inner hole that was 7.8 cm.Footnote 18 The jade huan was slightly larger than the bronze one and it was not toothed. Thus, when the copper disk was placed against the jade one, there was an alternating pattern of metal and stone around the rim (see Figure 1).Footnote 19
Toothed metal and jade huan, Shanxi Xiangfen Taosi, Tomb M11. From Guojia wenwuju 國家文物局, eds. Zhongguo zhongyao kaogu faxian.2001 中國重要考古發現. 2001 (Beijing: Wenwu, 2002), 27.
A number of copper-toothed huan have been found along the Hexi corridor in the Northwest, including at Shimao. Often they were found rather than excavated and the original archaeological context has been lost, so we do not know how many of them were originally buried together with round jade huan. However, two round jade huan bookending six toothed copper ones were found on a human arm bone in a cemetery at Shimao (see Figure 2). The excavation was not conducted by archeologists, but radiocarbon dating of the collagen of the arm bone indicated a date of ca. 1800 b.c.e.Footnote 20 This discovery both confirms the supposition that the huan were worn as bracelets and demonstrates that there was already an interest in combining jade and metal.
Jade and copper huan, found on arm bone in tomb, Shaanxi Shenmu Shimao. From Shenmushi Shimao wenhua yanjiuhui 神木市石峁文化研究會, eds. Shimao yuqi 石峁玉器 (Beijing: Wenwu, 2018), 144 (no. 067).
In the context of discussions of the culture and the metallurgy of the Steppe, huan and other artifacts worn on the body are conventionally described as “personal ornaments.” While it is clear that they were worn on the body, the “personal” implies that their purpose was bodily beautification and obscures the alternative possibility that such artifacts were worn during rituals, as well as in burial, and had a religious significance in the Steppe cultures that we do not have sufficient evidence to understand.
The Motif of Concentric Circle of Crosses
Copper toothed huan-bracelets have not been found at Erlitou. However, a round bronze disk inlaid in turquoise and found at Erlitou, has a pattern around the rim that may be related to the pattern produced by a metal toothed-huan stacked against a round jade one.Footnote 21 This disk was found in 1975, in a pit that had previously been disturbed. It was inlaid in turquoise and is illustrated in X-ray form in Figure 3 (left). The disk is round, 17 cm. in diameter and .5 cm. thick. Sixty-one square pieces of turquoise are spaced around the rim producing an alternating pattern of jade and copper. It also has two concentric circles of crosses made up of inlaid turquoise tesserae. The center of the disk is not perforated. It is also undecorated.
Left: X-ray of turquoise inlaid disk, Henan Yanshi Erlitou, Sector V Tomb KM 4:2. Right: bronze disk of the Qijia culture. Left: after Zhongguo shehui kexueyuan kaogu yanjiusuo Erlitou gongzuodui 中國社會科學院考古研究所二里頭工作隊, “Yanshi Erlitou yizhi xin faxian de tongqi yu yuqi” 偃師二里頭遺址新發現的銅器與玉器, Kaogu 1976.4, 261, fig. 5. Right: Image courtesy of Yi Hua 易華.
The crosses on this disk are wider at the tips. In an important early article that hypothesized the importation of metallurgy into China from the Bactria Margiana Archaeological Complex, Louisa Huber argued that this cross-motif derives from an aesthetic tradition of the Bactrian and Turkmenistan region, with the Northwestern Qijia culture acting as an intermediary. Her evidence included crosses and clusters of crosses excavated at Shahdad, Iran, which are wider at the ends than in the center.Footnote 22 The Bactria Margiana motifs include both individual and clusters of crosses, but to the best of our knowledge, examples concentric circles of crosses have not been discovered. Nevertheless, a Qijia culture copper toothed disk does have concentric circles of what appears to be a modified form of this type of cross; that is, the vertical lines are wider at the tips and the horizontal ones are abbreviated (Figure 3, right).Footnote 23 This modified cross pattern survives in the form of perforations in the copper, an indication that it was originally inlaid with turquoise. It probably also had a backing, either of stone or metal. Because this disk was not scientifically excavated, it cannot be dated.
A similar pattern of two concentric circles of crosses, also inlaid in turquoise, is found on a bronze yue 鉞-axe in the Shanghai Museum (see Figure 4). It was not scientifically excavated but metallurgical analysis confirms an Erlitou period dating.Footnote 24 The form of this type of broad-edge yue-axe derived from a jade ritual form of the southern Liangzhu 良渚 culture (3300–2200) centered around the Yangzi River delta and Taihu 太湖 lake. The Liangzhu culture was the major regional center of the Yangzi River region in this period. Its jade industry was highly developed and the jades were distributed widely. Both their ritual forms and the motifs that decorated them influenced the ritual forms found in the early Bronze Age. Their most important jade ritual forms were bi 璧-disks, and cong 琮-tubes, as well as yue-axes. Bi-disks are similar in shape to huan but they have wider rims in proportion to the central hole. Cong-tubes are square on the exterior with a round opening.
Turquoise inlaid bronze yue 钺-axe, Shanghai Museum. Image courtesy of Hu Jialin 胡嘉麟.
The artisans at Erlitou drew upon a wide range of other regional cultures, co-opting motifs and cultural forms for their own purposes, and then reflecting them outward. This axe is a particularly creative example. A turquoise-inlaid circle encloses two concentric circles of crosses with a round opening at their center. Thus, the design marked in turquoise inlay appears to be a bi-disk; that is, the bi and yue forms have been combined in this new technology of bronze inlaid with turquoise (again a combination of shiny stone and metal). In this case, the crosses are not wider at the tips; that is, they are like crosses found in the Central Plains tradition, including at Erlitou and in the Shang period. There are six crosses in the inner circle and twelve in the outer one. We do not know whether the numerology of the Shang period can be dated back to Erlitou. If so, the numbers of these crosses are possibly numerologically significant. Six was an important number in many contexts, including the oracle bone divination and Shang cosmology. From the point of view of the center, there were six directions, above, below, north, south, east, and west.Footnote 25 There were also six ritual cycles of 60 days (zhou ji 周祭) in a 360-day year, and 12 moons (months).
Metal Fragments of Vessels
The earliest metal vessels yet discovered are from Phase 3 of the Erlitou site and all of them were cast using a ceramic core and piece-molds. However, three fragments of metal that appear to be the remnants of vessels have been discovered from earlier periods.Footnote 26 None of them are very large and, if they are vessels, there is no evidence about how they were cast. The earliest is from Taosi. It is thicker along an edge, apparently the rim of a water basin (pen 盆) or similar vessel, and has the maximum dimensions of 3.7 x 4.4 cm. It is arsenic copper and has been dated to 2100–2000.
The other two fragments of what appear to be vessels are from major settlements in the Mount Song region that pre-date Erlitou. One was found at Dengfeng Wangchenggang 登封王城崗. Dated to a late phase of the site, ca. 2050–1994, it is roughly contemporaneous with the Taosi fragment. However, it is bronze; that is, it is a copper-tin alloy, rather than arsenic copper.Footnote 27 The Wangchenggang fragment is 5.7 cm. by 6.5 cm. and slightly rounded, so the archaeologists thought it might be a vessel fragment.Footnote 28 Gao Guangren and Shao Wangping suggested that it came from the bulbous leg of a gui 鬹-pouring vessel, similar to pottery gui found in the Dawenkou culture the East Coast. This identification is based on the illustration in a Qing dynasty bronze catalogue of such a gui. However, that catalogue also records an inscription on the vessel and no inscribed bronzes have been found in the Erlitou—or even the Erligang period that followed it, so it is not likely to depict a vessel from the turn of the second millennium b.c.e.Footnote 29
The other fragment is somewhat later and was found at Xinmi Xinzhai 新密新砦, the immediate predecessor of Erlitou as a dominant settlement in the Mount Song region. It is copper rather than tin-bronze and dates to ca. 1850–1750; that is, it was manufactured at about the time of the rise of the Erlitou settlement. According to the Erlitou archaeologist, Xu Hong 許宏, it appears to be the spout of a pouring vessel, such as a gui or he 盉.Footnote 30
These metal fragments suggest that people may have attempted to cast ritual vessels in the early second millennium b.c.e. However, there is no other evidence to suggest successful production of metal vessels at these sites. If they are the remains of vessels, they probably represent small-scale experimentation that was not sufficiently successful to lead to further development.
As we shall discuss below, the breakthrough in developing a viable piece-mold technology suitable for casting bronze vessels was made in connection with the production of clapper-bells and only later applied to ritual vessels.
Clapper-bells
We use the term “clapper-bell” as a translation for ling 鈴: bells that have clappers and hang downward, their sound generated by motion. The purpose is to distinguish them from “chime-bells,” such as nao 鐃 and zhong 鐘, musical instruments that were sounded by striking the exterior. Because they hang or dangle, they are sometimes called xuan ling 懸鈴, “hanging clapper-bells” in Chinese. This term is especially common for the clapper-bells of the late Shang and early Western Zhou that were hung inside the bases of bronze vessels. They are also called she ling 舌鈴, “tongue-bells,” which distinguishes them from bells that contain round balls (wan 丸), commonly called “jingle bells” in English.
As we shall discuss below, clapper-bells have a long history in pottery before they began to be cast in bronze.
The Taosi Copper Clapper-Bell
The most surprising metal discovery at Taosi was a small copper clapper-bell. This is because it was cast with bivalve mold and a suspended core. Thus, it is the earliest example of piece-mold casting with a suspended core yet discovered. Moreover, the artifacts first cast using this technology at Erlitou were also clapper-bells.
The Taosi clapper-bell was only 2.15 centimeters in height. It is copper (with a small amount of naturally occurring lead and trace of zinc: 97.86% cu, 1.5% pb, and .16% zn).Footnote 31 The top is flat and somewhat deteriorated, but it originally had two holes, which would have been used to suspend the clapper.Footnote 32 Traces of woven textile are also apparent on the exterior. The tomb in which it was found (M3296) was rudimentary, just over two meters long, and included no other artifacts. Although the tomb was not richly furnished like the Erlitou tombs, it was placed in the same general position, near the waist on the left side (Figure 5).
Tomb M3296 with copper bell, Shanxi Xiangfen Taosi. After Zhongguo shehui kexueyuan kaogu yanjiusuo Shanxi gongzuodui 中國社會科學院考古研究所山西工作隊 and Linfen diqu wenhuaju 臨汾地區文化局, “Shanxi Xiangfen Taosi yizhi shouci faxian tongqi” 山西襄汾陶寺遺址首次發現銅器, Kaogu 1984.12, pl. 3. 1; Zhongguo shehui kexueyuan kaogu yanjiusuo 中國社會科學院考古研究所 and Shanxisheng Linfenshi wenwuju 山西省臨汾市文物局, eds., Xiangfen Taosi:1978–1985 nian kaogu fajue baogao 襄汾陶寺 1978–1985 年考古發掘報告 (Beijing: Wenwu, 2015), vol. 4, pl. 297.
The social context of the Taosi burial is difficult to understand. The Erlitou tombs with clapper-bells were not particularly large, but they were well-furnished and included turquoise mosaics as well as clapper-bells, so the occupants probably had a special status. Moreover, Tomb M3, the earliest of the Erlitou tombs with clapper-bells, was placed in a central position in the courtyard of an ancestral temple. As we shall discuss further below, these tombs were probably those of religious interlocutors who used these artifacts in ritual performance. In contrast, this tomb does not even have a single pottery vessel. Moreover, it was placed near a pottery workshop.Footnote 33 Two possible explanations have occurred to us: (1) The occupant of the Taosi tomb was also a religious interlocutor and used the clapper-bell in ritual performance but died away from home and did not have descendants at the place of burial to provide him with wine or food offerings;Footnote 34 (2) He was an artisan associated with the manufacture of the clapper-bells and the copper clapper-bell signified some unusual role in this regard, perhaps to do with the experimental casting.
Pottery Clapper-Bells in the Neolithic Period
Pottery clapper-bells have a long history on the Central Plains, dating back the Yangshao period (5000–3000). Like those found in the Longshan period, they are generally very small and commonly have a flat top with one or two holes for suspending the clapper. These may also be used for the attachment of a tie, or there may be additional holes (see Figures 6 and 7).Footnote 35
Pottery clapper-bells of the Yangshao period. 1, 3: Henan Zhengzhou Dahecun 鄭州大河村; 2. Shaanxi Nanzheng Longgangsi 南鄭龍崗寺. After Gao Wei 高煒, “Shiqian tao ling jiqi xiangguan wenti,” 史前陶鈴及其相關問題, in Zhongguo shehui kexueyuan kaogu yanjiusuo 中國社會科學院考古研究所, ed., Ershiyi shiji de zhongguo kaoguxue 二十一世紀的中國考古學 (Beijing: Wenwu, 2002): 224.
Methods of hanging Neolithic pottery clapper-bells. Left, with 4 holes; middle, with 2 holes; right, with 1 hole. After Li Chunyi 李純一, Xian Qin yinyueshi 先秦音樂史, revised edition (Beijing: Renmin yinyue, 2005), 26, Fig. 9.
Pottery Clapper-Bells from Taosi
Besides the copper clapper-bell, seven pottery clapper-bells have also been found at Taosi. Clappers have not been found, which suggests that they were made of an organic material.Footnote 36 They vary somewhat in cross-section, but they are similar to one another and to the copper clapper-bell in their small size, profile that is wider at the bottom than at the top, flat tops, and in having two holes at the top for suspending the clapper.
Similar pottery clapper-bells have been found Shimao and at Laohushan 老虎山 culture sites in Inner Mongolia,Footnote 37 and some scholars have thus proposed that this type of clapper-bell was introduced into the Central Plains from the Steppe.Footnote 38 However, there is a long history of pottery clapper-bells on the Central Plains, dating back the Yangshao period (5000–3000), including the convention of a flat top with two holes for suspension.Footnote 39 In the Longshan period, these are found at sites of the Shijiahe 石家河 culture (2500–2000) in the Yangzi River valley and extend up along the eastern region to Inner Mongolia. Thus, it seems likely that the pottery clapper-bell tradition of the Laohushan culture was an extension of one that originated in the Central Plains, rather than having been introduced from the Steppe region.
In any case, the Taosi copper clapper-bell is so close in form to the pottery clapper-bells found at the same site that we may reasonably assume that it was modeled on them. This same type of pottery clapper-bell, with different pattern striations on the exterior, has also been found at the late Longshan period site Zhengzhou Xinmi 鄭州新密 in the Mount Song region It is 4.3 cm. in height, with two holes in the flat top and a similar oval section (see Figure 8).Footnote 40 We have seen that a metal fragment of a vessel from this region was also found at the site. Thus, we see that the Mount Song region also shared a tradition of pottery clapper-bells that were similar to those found at Taosi.
Clapper-bells. Left: pottery clapper-bell, Xiangfen Taosi; center: copper clapper-bell, Xiangfen Taosi; right: pottery clapper-bell, Zhengzhou Xinmi. After Zhongguo shehui kexueyuan kaogu yanjiusuo and Shanxisheng Linfenshi wenwuju, ed., Xiangfen Taosi:1978–1985 nian kaogu fajue baogao, 304, fig. 3-104-1, 667, fig. 4-146 and Tang Wei 湯威, “Zhengzhou Xinmi chutude Xinzhaiqi taoling” 鄭州新密出土的新砦期陶鈴, Wenwu 2012.1, 82, fig. 2.
Evidence of a Religious Context: A Clapper-Bell from Tianmen Shijiahe 天門石家河
To the best of our knowledge, only five pottery clapper-bells have been Yangshao period tombs.Footnote 41 In both the Yangshao and Longshan (3000–2000), other pottery clapper-bells are found in contexts that are not explicitly religious, such as in ashpits, earth-fill, or on the site surface. Nevertheless, a design cut into the wet clay on a clapper-bell found at the middle Yangzi River valley site of the Tianmen Shijiahe site in Hubei Province (2500–2000) is an abbreviation of a fanged-face motif that is of central importance to the iconography of the Shijiahe culture, so it probably had a religious meaning. The clapper-bell is 4.5 cm. in height and has the same flat top and two holes in the top as the clapper-bells discussed above. The flared shape of the body of the Shijiahe pottery clapper-bell is similar to the shape of the bronze clapper-bells at Erlitou (see Figure 9).
Pottery clapper-bell with abbreviated fanged tooth design, excavated at Tianmenshi Shijiahe Sanfangwan 天門市石家河三房灣 in 1956. After Hubeisheng bowuguan 湖北省博物館編, Hubei chutu wenwu jingcui 湖北出土文物精粹 (Beijing: Wenwu), 2006, 36.
Thus far, we have focused our attention on the relationship between Erlitou and the cultures of the North–Northwest that were connected to the Eurasian Steppe. Shijiahe is in the opposite direction. However, the Erlitou site was also connected to this region by its tributaries south of Mount Song. Moreover, Shijiahe culture or Shijiahe culture-influenced artifacts have been found at the Erlitou site. For example, a Shijiahe-style jade baton (bingxingqi 柄形器) decorated with a face motif was found together with the turquoise-inlaid bronze disk with concentric circles of crosses discussed above. Moreover, another Shijiahe-style jade baton in the form of a raptor (yingxingqi 鷹形器) was found at Erlitou Tomb M3 in Sector V, which contained a bronze clapper-bell and a turquoise mosaic on an organic backing. These artifacts have also been found at Shimao and even in tombs at Yinxu, apparently transmitted from ancient times. Thus, the ritual usage of pottery clapper-bells at Shijiahe might have a relationship to that at Erlitou.
The Importance of the Suspended Core
The metal artifacts imported to China from the Steppe are generally flat because they were open-cast or cast with two molds. However, bells and vessels are similar in having relatively large round or oval hollow interiors. Casting hollow artifacts using an assembly of molds required the use of a suspended core, as well as at least two outer molds. Some scholars have found a possible source for the use of a core at Taosi and Erlitou in Eurasian-influenced socketed weapons found along the Steppe borderland. Hwang Ming-chorng made the case for socketed axes, which require the use of coring, as the model for the Taosi and Erlitou bells and the inspiration for later piece-mold casting.Footnote 42 See Figure 10.
Left: reconstruction of the stone mold, core, and sprue gate for a Eurasian Steppe socketed axe. Center: reconstruction of the ceramic mold, core, and sprue gate for the Taosi copper clapper-bell. Right: reconstruction of the stone mold and core for a spearhead found at Xinjiang Fukang Ziniquanzi 新疆阜康滋泥泉子. After Huang Mingchong 黄铭崇 (Hwang Ming-Chorng), “Maixiang zhongqi shidai: zhutong jishu de shuru yu zhongguo qingtong jishu de xingcheng” 邁向重器時代——鑄銅技術的輸入與中國青銅技術的形成, Zhongyang yanjiuyuan lishi yuyan yanjiusuo ji kan jikan 中央研究院歷史語言研究所集刊, 85.4 (2015), 631, fig. 19 (left and center); Liu Xiang 劉翔, “Ouya caoyuan shuqiong tongqi zhuzao jishu qiyuan yu chuanbo” 歐亞草原豎銎銅器鑄造技術起源與傳播 Kaogu 2022.3, 329, fig. 10 (right).
Another possible influence, as Hwang observed, was socketed spearheads with a hook on the side that originated with the Seima-Turbino cultures of the Eurasian Steppes. Lin Meicun and Liu Xiang have argued that some of these were cast in China and conclude that “from the metallurgical perspective in particular, the bronze casting of spearheads indicates the origin of piece-mold casting and core-casting technology, which influenced the bronze vessel casting method in China”Footnote 43 While this hypothesis is certainly possible, the evidence is indirect. To our knowledge, no socketed axes or spearheads have been excavated at Taosi or at Erlitou. Moreover, few spearheads have been found in clearly dateable archaeological contexts. Thus their relative chronology with respect to the copper and bronze clapper-bells found at Taosi and Erlitou is not clear.
The casting technology used at Erlitou is more highly developed and substantially different from that found in the borderlands and the Hexi corridor. For example, the weapons cast in the borderlands primarily used stone molds and they were mostly made of pure copper or arsenic copper. The clapper-bells and vessels cast at Erlitou used ceramic molds and a late Longshan-period-style kiln that had already developed to reach high temperatures. Moreover, the alloy was primarily tin-bronze with the innovation of added lead. The basic form of clapper-bells and vessels, in which hollow cavities were the raison d’être of the artifact and therefore relatively large, is also very different from the weapon sockets. Thus, while the existence of socketed weapons could have served as an intellectual resource in the invention of the piece-mold and coring technology developed at Erlitou, their artisans produced what was essentially a new technology.
Clapper-Bells as the First Artifacts to Be Cast in Bronze with a Piece-Mold and Coring Technology
The earliest pieces of evidence of the use of this new technology are clapper-bells. In total, six bronze clapper-bells have been found at the Erlitou site. They are all tin-bronze rather than the arsenic copper that was used for the clapper-bell at Taosi. They are also more substantial artifacts, with heights from 7 to 9.3 cm. compared with the 2.1 cm. of the Taosi bell. The tops of the bronze bells are flat with one or two holes, following the tradition of the Taosi copper and Longshan period pottery clapper-bells. However, a bridge has been added across the holes on the top, so that the tie used to suspend the clapper did not need to be used for hanging the bell. A flange is also found on one side, where the molds joined, a predecessor of the flanges later used on ritual vessels.Footnote 44 Besides these bronze clapper-bells, two pottery clapper-bells dated to Erlitou Phase 3 have also been found at the site. They lack the flange but otherwise resemble the bronze clapper-bells found at Erlitou.Footnote 45 Since the earliest bronze clapper-bells pre-date them, they were probably modeled on them, rather than vice versa (see Figure 11).
Bronze and pottery clapper-bells, Henan Yanshi Erlitou. Left: Bronze, Sector IX, Tomb M4: 1 (Erlitou Phase 2); Center: Bronze, Sector VI, Tomb M11: 2 (Erlitou Phase 2); Right: Pottery, Sector II, T13 ⑥ (Erlitou Phase 3). After Li Chunyi 李純一, Zhongguo shanggu chutu yueqi zonglun 中國上古出土樂器綜論 (Beijing: Wenwu, 1996), 89, 91 (Chart 24).
Very few bronze vessels from the Erlitou period have been excavated at other sites. However, another bronze clapper-bell that resembles those found at Erlitou was excavated in 1972 in the Huai River valley at Feixixian Dadunzi 肥西縣大敦孜 in Anhui Province. Only minimal details of that excavation have been reported.Footnote 46 More recently, in 2019, late Erlitou period bronze artifacts were excavated at the nearby site of Sanguanmiao 三官廟, also in Anhui, Feixixian. They do not include ritual vessels and are mainly weapons, including two ritual yue-axes, but they also include an Erlitou-style bronze clapper-bell with a flange on one side. The pottery forms conform to local styles, so this would seem to be an Erlitou outpost or incursion, perhaps related to the transportation of ores.Footnote 47 Although a full excavation report has not yet been published, skeletons found in a nearby ditch suggest either a military disaster or an incidence of human sacrifice.Footnote 48
In retrospect, clapper-bells with their oval, hollow bodies are a logical first step in the development of a technology for casting ritual vessels that have similar hollow bodies; that is, once the artisans discovered how to use a suspended core and piece-molds to make clapper-bells, the same technique could be extended to the production of vessels. Moreover, once cores were used as the foundation for hollow interiors, two outer molds could easily be extended to three—or more. Nevertheless, we have no reason to think that, when clapper-bells were cast in bronze, the artisans already thought of using the same technique to cast vessels. Clapper-bells were already cast in Erlitou Phase 2 and vessels appear only in the latter part of Phase 3. This temporal lag suggests that the casting method was created in order to cast clapper-bells, and vessels came later.
The significance of clapper-bells
The priority of clapper-bells in the development of piece-mold technology brings forth the question: why clapper-bells? We suggest that they had a two-fold significance: (1) With their bronze exterior and jade clapper, they combined two luminous materials thought to embody divine power; (2) The resonance of the sound made when jade struck against bronze. Before the production of bronze, “jade”—that is, hard translucent stone, mostly nephrite—was the medium of greatest prestige for the production of ritual artifacts other than vessels. As discussed above, bronze and jade were both luminous, a quality that was associated with divinity, including the celestial bodies and the ancestral spirits. Music, performed on such instruments as stone chimes and drums, was already an important part of ritual performance. However, when the jade clapper struck against the bronze exterior, these two materials created a new, far-reaching, never-before-heard sound. This sound was then used as a means of contacting the ancestral spirits to whom sacrifice was regularly made.
Clapper-bells at Erlitou
All six of the bronze clapper-bells found at Erlitou were found in tombs. The tombs are medium-sized—all of them a little over two meters in length—so they were probably not those of rulers. As the excavator Xu Hong has observed, the bronze contents of these tombs can be divided into three stages. In the earliest (Erlitou Phase 2), the only bronze artifact was a clapper-bell.Footnote 49 An example is Tomb M3 in Sector V, excavated in 2002. This tomb also included a turquoise mosaic of a dragon (Figure 12). It was made up of about two thousand pieces of turquoise, affixed to an organic backing, such as cloth, leather, or wood, that had entirely decayed. It was 64.5 cm. long. The trapezoidal head with human-shaped eyes lay on the chest near the shoulder and the snake-like tail rested across the body. The occupant was also attired in an elaborate necklace of cowry shells and a headdress to which three spirals of white pottery were attached.Footnote 50 The tomb was one of a group of six in the courtyard of Temple-palace 3, which Xu Hong takes as an ancestral temple. It is in the most prominent position among this group, closest to the axis of the courtyard. This suggests that the occupant had high status and a special relationship to the ancestral temple, perhaps in the performance of ancestral rites.Footnote 51
Tomb M3, Sector V, Henan Yanshi Erlitou. Left: Bronze clapper-bell with turquoise mosaic of a dragon on an organic backing. Right: Clapper-bell in profile, seen from above, and jade clapper. Image courtesy of Xu Hong 許宏.
The other two tombs that included clapper-bells but no other bronze artifacts were also Phase 2. However, their assemblages are not assessable. One (M4, Sector IX, excavated in 1982) was disturbed before excavation. The other (M22, Sector V, excavated in 1962) was highly unusual—the grave goods were relatively abundant, but the tomb was only a half meter wide and the bell was missing its clapper. This suggests that the circumstance in which the person was buried was somehow irregular.
In the second stage, a turquoise-inlaid bronze plaque was included in addition to the bronze clapper-bell. This stage is exemplified by Tomb M4 in Sector V, which belongs to Erlitou Phase 2 or perhaps Phase 3.Footnote 52 These bronze plaques are also included in third-stage tombs (see Figure 13).
Turquoise-inlaid bronze plaques excavated at Henan, Yanshi Erlitou. From Zhongguo shehui kexueyuan kaogu yanjiusuo Erlitou gongzuodui 中國社會科學院考古研究所二里頭工作隊, ed., “1981 nian Henan Yanshi Erlitou muzang fajue jianbao 1981” 1981 年河南偃師二里頭墓葬發掘簡報, Kaogu 1984.1, 38, fig. 5.1; “1987 nian Yanshi Erlitou yizhi muzang fajue jianbao” 1987年偃師二里頭遺址墓葬發掘簡報, Kaogu 1992.4, 296, fig. 2.1; “1984 nianqiu Henan Yanshi Erlitou yizhi faxian de jizuo muzang” 1984年秋河南偃師二里頭遺址發現的幾座墓葬, Kaogu 1986.4, 321, fig. 6.1.
The plaques were all found near the middle of the tombs. They have two loops on each side, rounded corners, and are a little narrower at one end. The backs are also slightly bowed. The designs vary, but they all have face motifs with two eyes, either human-shaped or round, at the narrow end, and an abstract design at the wide end. The loops suggest that they were tied or sewn onto something else, perhaps clothing since there are also traces of fabric. Their positions in the middle of the tomb suggest that they were worn on the body, perhaps on the chest.Footnote 53 Huang Tsui-mei has reconstructed the positions of the bodies in these tombs to argue that they were worn on the arm.Footnote 54 However, the bodies had completely decomposed and her reconstructions of the positions of the bodies are based upon the placement of the plaques, making her argument circular. Moreover, the measurements of the plaques are 14.2 cm. by 9.8 cm. (Tomb M4, Sector V), 16.5 by 8–11 cm. (Tomb M11, Sector VI), 15.9 by 7.5—8.9 cm. (Tomb M57, Sector VI). These measurements are too large for the plaques to be worn on bare arms, but it is possible that they were tied onto very wide sleeves.
The plaques were all found in tombs that also have clapper-bells. This suggests that, whether on the arm or on the torso, they were worn in ritual activities that also include ringing the clapper-bells. The mosaics on the plaques depict two-eyed motifs with human-shaped or round eyes that are set within animal-like faces on the narrower end and an abstract design on the wide end. The motifs are reminiscent of various two-eyed motifs found on Neolithic jades and presage the taotie motif that decorated bronzes of the Shang period. The most likely explanation for this particular combination of artifacts is that the occupants were religious interlocutors or spirit mediums who performed offering rites to the ancestral spirits.Footnote 55 The clapper-bells would have been used to contact the spirits and the two-eyed bronze and turquoise plaques signified enhanced their spiritual power in the performance of these rites.
In the third stage of development, a bronze jue 爵-wine pourer is found with a bronze clapper-bell and turquoise inlaid bronze plaque. Accordingly, the Phase 4 tombs, M57 and M11, each had a bronze clapper-bell, a turquoise-inlaid bronze armlet, and a bronze jue (see Figure 14).Footnote 56
Bronze jue Excavated at Erlitou from Sector VI, Tomb M11 (left) and Sector VI, Tomb M57 (right). After Zhongguo shehui kexueyuan kaogu yanjiusuo Erlitou gongzuodui, “1984 nian qiu Henan Yanshi Erlitou yizhi faxian de jizuo muzang” 1984 年秋河南偃師二里頭遺址發現的幾座墓葬,” Kaogu 1986.4, 320, fig. 5, and Zhongguo shehui kexueyuan kaogu yanjiusuo Erlitou gongzuodui 中國社會科學院考古研究所二里頭工作隊, “1987 nian Yanshi Erlitou yizhi muzang fajue jianbao” 1987年偃師二里頭遺址墓葬發掘簡報, Kaogu 1992.4, 296, fig. 2.
The use of jue in Erlitou tombs continues a Longshan Neolithic tradition in which wine vessels were the core vessels of a ritual assemblage. Whereas bronze clapper-bells and turquoise-inlaid plaques have been found only in this group of tombs, bronze jue have been found in other tombs. Moreover, jue made of pottery or bronze, together with 觚-goblets made of pottery, lacquer, or bronze, were the core artifacts of tomb assemblages until the Early Western Zhou dynasty. At Erlitou, the gu have decomposed, leaving only the round pottery disks that have been placed in their bases and traces of red earth.Footnote 57 The ubiquity of this pair of vessels suggests that the offering of wine was a necessary stage to begin communication with the ancestral spirits.Footnote 58 Thus, if these occupants of the tombs were religious interlocutors in their lifetime, they would have used the bronze clapper-bells to establish contact with the ancestral spirits and then, adorned with the turquoise mosaics, poured a wine-offering from a brilliantly shining bronze jue. After death, they and other people who were also buried with these vessels, would use them to offer wine.
Clapper-Bells between the Erlitou and Yinxu Periods
Very few clapper-bells have been found between the Erlitou and Yinxu periods; furthermore, the archeological context in which they were found at Yinxu is very different from that at Erlitou. Nevertheless, we will argue below that their role at Yinxu carries a similar meaning to that at Erlitou; that is, they were still a means of contacting the ancestral spirits. This supports our understanding of their meaning at Erlitou.
For the Erligang period, only one bronze clapper-bell has been found: in a tomb at the Yanshi Shangcheng 偃師商城 site, a walled settlement about six kilometers from Erlitou. However, two mold pieces for casting clapper-bells were also found in a bronze foundry at the Zhengzhou Shangcheng 鄭州商城 site.Footnote 59 Thus, the absence of bronze bells during the Erligang period is probably due, at least in part, to the limitations of archaeological excavation at Zhengzhou.
The tomb measured 2.66 m x 1.5 m and had an inner and outer coffin. It had a “waist pit” (yaokeng 腰坑))—a specially constructed pit beneath the coffin—that contained the remains of an animal. It also had a second level ledge (ercengtai 二層台) around the perimeter on which offerings were placed. Both are typical of Shang tombs. The species of the animal is not identified in the archeological report. However, dogs had begun to be buried in waist pits around this time, so we may reasonably assume that it was a dog. Significantly, a turquoise mosaic, with an organic backing that had decomposed, was found in the coffin near the waist of the occupant. The clapper-bell was placed on the second level ledge. It was 8.5 cm. in height, had a single flange and a flat top with holes for suspension, and a bridge across them for hanging, like the Erlitou period clapper-bells. This tomb dates to the fourteenth century b.c.e.Footnote 60 Thus, it is two centuries later than the Erlitou tombs discussed above. The combination of clapper-bell and mosaic is reminiscent of the Erlitou tombs.
Two bronze clapper-bells were also found in a tomb (M102) at Gaocheng Taixi 藁城台西 in Hebei Province, a transitional site between the Erligang and Yinxu periods. They were placed between two people, who had been buried together in a single coffin. One is in a supine position; the other has flexed legs and faces him. The clapper-bells were found between them near their waists.Footnote 61
Clapper-Bells in the Yinxu Period
We have not been able to find other examples of bronze or pottery clapper-bells before the Yinxu period. Moreover, pottery clapper-bells are absent at Yinxu.Footnote 62 However, bronze clapper-bells are suddenly plentiful. More than 350 bronze clapper-bells have been excavated at the Yinxu site.Footnote 63 Their role has clearly changed. They are no longer found as prized possessions buried with people adorned with turquoise mosaics and they no longer have jade clappers. Indeed, it is estimated that over ninety percent of the clapper-bells found at Yinxu were hung around the necks of dogs.Footnote 64 Moreover, dogs found in building foundations or buried beneath walls do not wear clapper-bells, so the purpose hanging clapper-bells around the necks of dogs was related to their role as death attendants. These bells are often decorated with taotie motifs, which are commonly inverted; that is, the mouth of the creature is at the top of the bell and the eyes at the bottom. This is possibly related to their role in guiding the dead through the underworld; that is, the bell was intended to be seen by the spirits above. It is also possible that the underworld was seen as an inversion of the world above (see Figure 15).
Clapper-bells with upside-down taotie, Yinxu Xiqu 殷墟西區. (1) Tomb M823:1; (2) Tomb M263:15; (3) Tomb M265:1. After Zhongguo shehui kexueyuan kaogu yanjiusuo Anyang gongzuodui 中國社會科學院考古研究所安陽工作隊, “1969–1977 nian Yinxu xiqu muzang fajue baogao” 1969–1977年殷墟西區墓葬發掘報告, Kaogu xuebao 1979.1:93, fig. 68: 14–16.
At Yinxu, clapper-bells are found in two contexts: tombs and sacrificial pits associated with royal tombs. These sacrificial pits were made in association of the burial and may be considered an extension of the mortuary rites involved in burial. Besides dogs, some clapper-bells are found on other animals—primarily horses (or their chariots), but there are also examples of elephants, a pair of cows, and a monkey. One pit also has a human with a clapper bell buried close to his wrist.Footnote 65
In tombs, the dogs are commonly found in “waist pits.” Conceptually, these pits are the entry to the underworld, known in later times as the Yellow Springs (huang quan 黃泉). That this belief was already present in the Shang period is evident from the construction of the royal tombs. The Anyang archaeologist, Yue Hongbin compared the depth of the bases of these tombs to the water level, which was determined by contemporaneous Shang period wells and discovered that the bases had been deliberately constructed to meet the water level.Footnote 66 Thus, the dogs in the waist pit below the coffin were intended to guide the tomb occupants through the watery underworld so that they could join their ancestral spirits. In this context, we may reasonably assume that the role of the clapper-bells was similar to that of the bronze clapper-bells at Erlitou; that is, their sound was a means of contacting the spirits.
Dogs, with clapper-bells, may also be found in other parts of tombs, for example on the “second-level ledges” (erceng tai 二層台) constructed around the perimeter of the tomb, which contained various types of offerings, and in the earth-fill. Their role there was probably similar to that of the dogs with clapper-bells in the sacrificial pits that accompanied the royal tombs at Yinxu. With the exception of the monkey, these animals are ones that could be used for transportation. For example, horses, which were buried together with chariots, sometimes wore clapper-bells around their necks. Similarly, two cows yoked together, presumably because they drove a cart, also wore bells.Footnote 67 The elephants sacrificed in pits also wore clapper-bells. In contrast, other cows, as well as sheep and goats, which were frequently offered as food sacrifices, are not found with clapper-bells around their necks. That is, the dogs and other animals and humans who were buried with clapper-bells accompanied the dead to the spirit world, with their bells serving to contact the ancestors who had predeceased them. The monkey and the human are anomalies, but they were presumably also intended to accompany their master after death.Footnote 68 In sum, while the role of clapper-bells at Yinxu was not the same as at Erlitou, it had a distinctive role among other mortuary artifacts. We suggest that this reflects its evolution from that played by clapper-bells at Erlitou.
In the late Shang and Zhou periods, clapper-bells begin to be found within the bases of bronze vessels. Sun Ming 孫明 has identified eight Shang and thirteen Western Zhou ritual vessels that had bronze bells suspended, within the base of the vessel, from a knob at the bottom of the bowl. The Shang vessels include five gu-goblets, one zun 尊-wine vessel-, and a dou 豆-food-serving vessel. A zu 俎-altar for meat sacrifices, from the late Shang or early Western Zhou, also had two clapper-bells suspended at each end of the stand.Footnote 69 This new practice appears to have originated in North China rather than the Central Plains. It is unusual because the bells have been incorporated into the offering rites and the implements used therein. Nevertheless, the clapper bells may have retained their role in establishing communication with ancestral spirits; that is, they would have rung when the vessels were moved, thus alerting them to the presence of offerings.Footnote 70
In sum, although the archaeological distribution of bronze clapper-bells in the Yinxu period was different than that at Erlitou, their unusual role at Yinxu reflects a degree of continuity. that is, they remained a means of contacting the ancestral spirits.
Conclusion
When metallurgy was introduced to China from Western Eurasia around the turn of the second millennium b.c.e., its primary attraction was its luminosity, which was associated with spiritual power. This attraction, which is shared by other metals and translucent stones, has a cognitive basis and probably also played a major role in the development of bronze casting in other Bronze Age civilizations. In China, offering rites were the focus of religious practice, and ritual vessels became the focus of the bronze culture developed on the Central Plains. However, the unique technology used in China for casting bronze vessels was first developed in order to make bronze clapper-bells rather than ritual vessels. These shared a hollow body with bronze vessels and served as the foundation for the development of the piece-mold and coring technology used in casting vessels. At Erlitou, the bronze clapper-bells had a ritual purpose of their own. By combining luminous metal with jade clappers, they were doubly numinous. Moreover, when jade struck metal, it created a new sound that was then used as a means of establishing contact with the ancestral spirits. Thus clapper-bells were used in performance by religious interlocutors.
There is little evidence of this role for clapper-bells after the Erlitou period and very few have been found between the end of that period and the Yinxu period. At Yinxu, they reappear primarily worn around the necks of dogs who were buried with their owners as death attendants. In that case, the idea was generally the same; that is, when the dogs guided their owners through the Yellow Springs, the sound of their clapper-bells alerted the ancestors who had pre-deceased them to their coming.
