In the Paleolithic Age about 654.38 million years ago, a drilled bone pendant was found in the cave site of Longgushan in Zhoukoudian, Beijing. They are made of fish bones, some of which are dyed red by hematite. The Neolithic bone chisel (used for tying hair) and 8577 bone beads unearthed from Jiangzhai Tomb in Lintong, Shaanxi Province are polished smoothly and have perfect and regular shapes. At Dawenkou Site in Ningyang, Shandong Province (about 25th century BC), bone-piercing tubes, bone combs and so on were unearthed, with smooth knives and exquisite skills. 1973 A long bone dagger was found at Hemudu site in Yuyao, Zhejiang. The front is carved with a double-headed eagle pattern, and the upper and lower ends are carved with patterns, which is very delicate. There were professional bone carving workshops in Shang Dynasty. Combs, knives, bowls and flower trays of bone carvings have been unearthed from Shang Dynasty sites such as Anyang, Huixian and Changping in Henan. The flower plate is about 16cm long and 7cm wide. There are two layers of gluttonous patterns carved on the upper end and strip patterns carved on the lower end, which are distinct and dense. The handle of the bone dagger is engraved with patterns such as clouds and thunder, gluttony and dragons and phoenixes. In the past, bone furniture only paid attention to smoothness. In the Shang Dynasty, it was improved into a corolla shape and engraved with patterns such as phoenix, which became a decoration inserted in the hair. In the Han Dynasty, it became a step shake. After the Han dynasty, bone carvings gradually declined, but they were still made by the people.