良渚文化
The Chengziya site in Longshan, Shandong has produced fragments of inscribed bones presumably used to divine the future, dating to 2500–1900 BC, and symbols on pottery vessels from Dinggong are thought by some scholars to be an early form of writing. Again, this is controversial. Symbols of a similar nature have also been found on pottery shards from the Liangzhu culture of the lower Yangtze valley.