Where did the ancestors of Qinghai people migrate?

Before Xining, the provincial capital, there were five dynasties and ten countries. There were people here at that time, and it was also a city at that time. What you see now is that most Qinghai people have emigrated to Shaanxi, Henan, Shandong, Hunan, Jiangsu and Northeast China (the northeast is dominated by workers' eldest brother, which was built in the northwest).