Introduction to the emperor's wife: In the fifth year of Jian'an in the Eastern Han Dynasty, Cao Cao went on an eastward expedition and captured Guan Yu and Liu Beigan and his wife Mi in the Battle of Xiapi. In order to protect the safety of the emperor's wife, Guan Yu temporarily surrendered to Cao Cao after the "Three Treaties on Earth and Mountains" and came to Xuchang. Cao Cao favored talented generals, so he made Guan Yu a partial general and gave him a house in the palace for Guan Yu and his two wives to live together. In order to avoid suspicion, Guan Yu divided the house into two courtyards and let his two wives live in the inner courtyard. , he lived in the outer courtyard. There was a floor in the courtyard, where Guan Yu held a candle until dawn and read "Spring and Autumn" at night. The Chunqiu Tower got its name from this.