Abstract
The thought of Circular Heaven and Square Earth is the Chinese traditional thought. The root of the thought is Jade disc (玉壁) and Jade cube (玉〓) at Liangzhu culture (良渚文化). Jade disc is a circular disc with a small hole at center of it. Jade cube is almost a rectangular solid body with a big hole within it. Authors performed field survey in Liangzhu culture area. The places are Liangzhu ruins (3300-2000BC) and ruins of Yin dynasty (1600-1046BC) in Anyang (安陽). In Yin Museum, authors researched oracle bone inscriptions.
