Date: Liangzhu Culture (c. 5,400 to 4,300 years ago)
Dimensions: Length 7.4 cm, Width 6.6 cm, Height 5.1 cm, Inner diameter 6.5 cm, Outer diameter 7.1 cm
Material: Jade
Unearthed from Fuquanshan Site, Qingpu District, Shanghai
Cong was a sacrificial vessel as well as an object used for burial and funeral ceremonies. This piece was carved with the simplified deity mask pattern on the upper part and the simplified mythological creature mask pattern on the lower part. Both sides of the masks are decorated with flying birds, symbolizing the messengers of the deity.