This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Banpo pottery symbols.svg Banpo pottery symbols According to Yu Shengwu history researcher five seven no ten no twenty show spear cinq sept no dix no vingt indique lance Dans Li Liu and Xingcan Chen The Archaeology of China From the Late Paleolithic to the Early Bronze Age Cambridge University Press ces