The Liangzhu Culture dates from between 5300 and 4000 years ago, and was
distributed around the Taihu Lake region. The bright and diligent Liangzhu
ancient people made splendid achievements in both material and spiritual
culture, which attract the attention of the world. They applied advanced
plough implement in paddy field agriculture, produced black potty, jade-ware,
lacquer-ware and even silk. All of them led other simultaneous ancient
cultures and made great contributions to the development of Chinese ancient
civilization.

Tubby Cong (jade):
1) It is one of the most representative ritual objects of Liangzhu jade
2) It looks round inside and square outside
3) It has four corners carved with the motif of a deity skull combined
with an anima mask
4) Between each two corners there is a groove
5) It has magical shape, perfect craftsmanship and deep significance
reflecting that it is the ritual objects monopolized by the nobles
of the spiritual power