Although segmented discs are commonly found in both Shang and Western Zhou tombs, they are normally in sets of two or three, rarely in four. A single arc excavated from the tomb of Fuhao is clearly a quarter of a disc (see Tomb of Lady Hao at Yinxu in Anyang, Cultural Relics Publishing House, Beijing, 1980, pl. 97, no.1027.) A set of four-segmented disc decorated with scrolls dated to Early Eastern Zhou is in the Winthrop Collection, illustrated by Loehr in Ancient Chinese Jades, Harvard University, Massachusetts, 1975, no. 349, p. 235. Some of these discs are clearly of Neolithic origin that have been handed down. It is unsure what their function or purposes were.