THE 2017 EXCAVATION OF THE GUIJIABAO SITE IN YANYUAN, SICHUAN
A well-preserved Neolithic settlement was uncovered at the Guijiabao site in 2017. Two phases, dating from 5000 to 3900 years ago, can be identified, representing different stages of cultural development in the middle Jinsha River area and surrounding regions during the Neolithic period. Early remains are relatively scarce, including a semi-subterranean house, a few potteries, and stone/jade tools. Similar finds in neighboring regions are limited,indicating an influence from the culture of the northwest region. In contrast, the remains from the second phase are abundant, featured by ground-level houses, ash pits , ash ditches,and special sites with concentrated deposits of artifacts. The pottery from this period is characterized by advanced decorations, including engraved patterns, stamped impressions,and complex designs consisting of smooth surfaces. The stone tools include perforated knives, axes, adzes, spindle whorls, balls, arrowheads, and fishing net weights, indicating a mixed subsistence economy dominated by agriculture, supplemented by gathering, fishing,and hunting. Similar remains are commonly observed in the middle Jinsha River area and surrounding regions, forming a cultural sphere. Meanwhile, the second-phase remains from the Guijiabao site possess unique features, representing a distinct cultural type within the sub-zone of the Yanyuan Basin in this sphere.