We identified the open cluster (OC) groups using Gaia data by analyzing the close correlations in three-dimensional (3D) spatial, 3D velocity, and age. N-body simulation results reveal that these OC groups are gradually dispersing into independent clusters. For G1 and G2, correlations between cluster ages and distances from predicted supernova (SN) explosion sites, combined with pulsar associations, strongly suggest feedback-driven sequential star formation. These results highlight the role of stellar feedback in hierarchical star formation.
