 There is also notable similarity with the painted pottery shards found at Lower Xiajiadian cultural sites (2200–1600 BCE).Although modern scholars use the word ""Taotie"", it is actually not known what word the Shang and Zhou dynasties used to call the design on their bronze vessels; as American paleographer and scholar of ancient China, Sarah Allan, notes, there is no particular reason to assume that the term "taotie" was known during the Shang period.The first known usage of "Taotie" is in the "Zuo Zhuan", a narrative history of China written in 30 chapters between 722 and 468 BCE.