In the 18th year of Taihe, the emperor collapsed, and the three-year-old Tianqi Emperor succeeded to the throne, and the Empress Dowager Mingxuan came to the court to rule. During the long reign of Tianqi Emperor, Xu Yan, the Duke of Zhenguo, has always been a special existence, and the two are also teachers. Friends, relatives and enemies, together created a prosperous China.