Yange Beiping

In the 31st year of Hongwu, Taizu died, Jianwen came to the dynasty, and civil servants took charge of the government. They slashed the vassal sword and ax and swept away the clan. The four kings of Zhou, Qi, Dai, and Min were exiled and imprisoned. The king of Xiang was unable to bear the consequences and burned himself in the palace. Everyone in the world was in danger. Zhu Di, the King of Yan in Peking, has been guarding Northern Xinjiang for twelve years. The three thousand battalions under his command are all white-armored dead soldiers who have fought bloody battles in Mobei for the rest of their lives. He only commands the three cavalry of Duoyan Guards outside the pass. They are the last and most difficult to eradicate in the eyes of the imperial court.