The Chengziya site is currently the richest site of the Yueshi culture discovered to date.The 2022 excavation of tomb NM5,the only tomb found with pottery and proper inhumations,provides crucial data for studying the burial customs of the Yueshi culture.The Yueshi culture represents a significant phase in the civilization process of the Haidai region.The transition from the Longshan culture to the Yueshi culture reflects the collapse of city-state societies and the rise of dynastic civilizations.The middle to late Xia dynasty and early to middle Shang dynasty,to which the Yueshi culture belongs,marks a critical period in early Chinese history.The Yueshi culture played an important role in the relationships among the Yi,Xia,and Shang,collectively led the history of the Xia,Shang,and Zhou dynasties.