In October 1996 and May 1997, the Jilin Provincial Institute of Cultural Relics and Archaeology and other institutions carried out two seasons of small-scale excavation. The discoveries include a house-foundation and an ash-pit, as well as 56 pottery vessels and stone tools. Based on the stratigraphical evidence and the shapes of unearthed objects, the excavated remains can be divided into two phases. The early phase is represented by the House-foundation 96F1 and belongs to the Spring-and-Autumn period. The late phase embraces Ash-pit 96H1, Ditch 96G1 and stone implements,dates from about the Warring States period, and must belong to the late Liutingdong culture.
Many ash- pits and house- foundations of Kin Dynasty had been found in Cheng-gang-zi Ancient city. Pottery jar、pot、basin、coins、iron hairpin and some ornaments were found in some ash-pits. Bricks、tile pieces、building ornaments and household utensils were found abundant in house - foundations. A set of complete utensils were unearthed in one house-foundation which floor was paved with slabstone.
