Liangzhu culture, jade congSize 1.6 cm diameter 4.5 cm high weighed 35 gramsJade cong said as one of the important sacrificial vessel in ancient , in the shape round the foreign party, confirm the "wall round like day, cong party as" the ancient view.This piece of jade cong elaborate carve, exquisite jade oil moisten, mellow patina, symmetrical, uniform color of primitive simplicity and refined, visible process are high.Shape is square cylinder, lip and foot into cylindrical, take a pine-covered grounds, flash light element inside and outside the wall smooth, fine grinding.Modelling neat of sobriety, agile smoothly cut workers.