Later generations of detectives traveled through the Three Kingdoms and became Guan Xing, Guan Yu's second son. It was the winter of the 24th year of Jian'an. Guan Yu had just defeated Maicheng and was about to retreat to Linju and was surrounded by Lu Meng. At the critical moment, Guan Xing resorted to the strategy of changing families, and suggested that Guan Yu go retrograde eastward and attack Jianye to change families with Sun Quan. Guan Yu accepted the suggestion and ran thousands of miles to attack
