The Other Half of Northern Dynasties History

I really want to write a systematic introduction to the history of the middle and late Northern Dynasties. The Tuoba tribe of Xianbei went through several twists and turns, beating drums to spread flowers, and faced "nine difficulties and eight obstacles" before settling in Luoyang. Finally, it transformed from the original primitive tribal alliance to a feudal centralized monarchy, and merged its savage blood into the soul of Chinese civilization. Today's Chinese people should remember them and this period of history. The first important figure to appear in this period of history was Emperor Xiaowen Yuanhong. It was late spring in the 23rd year of Taihe in the Northern Wei Dynasty (499).