The bone thresher was excavated in 1970 at a Neolithic site in Hemudu Village, Yuyao of East China's Zhejiang Province. Currently held in the National Museum of China, the bone thresher is a primitive farm tool that is 16 centimeters long and 10 centimeters wide. The appearance of bone farm tools demonstrates that the materials for tools in the Neolithic period went beyond only stones.

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