Jade Cong was first found in the site of the Liangzhu Civilization. It has a round hole and a square edge. It was used to connect the heaven and the earth.
This Cong was found right under the back of the marquis. Though there is only a half, it is still a recognizable Cong with decorative animal-shaped carvings. This is the first half Cong that ever covered. It was probably a kind of burial object.