According to current archaeological reports and a number of archaeological evidence, the earliest domestic sheep in China suddenly appeared in Gansu and Qinghai provinces about 5600-5000 years ago, then spread eastward and entered the Central Plains about 4500 years ago  Sheep bones have been found in many archaeological sites in different areas dating back to 4500-4000 years ago in the Central Plains  From a diachronic point of view, the emergence of sheep in the Central Plains has an obvious development process from scratch, from less to more, while the emergence of ancient Chinese domestic sheep is obviously early in the west and late in the east
There is likely to be a process of spreading eastward from northwest China
Archaeological discoveries of domestic sheep in the Central Plains.