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. 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.