Rolling the Jialing River on the edge of the ancient city of Langzhong, the time is like this rushing river, and it also precipitates the traces of history. Standing on the riverside, the turbulent scene of the Three Kingdoms period seems to be in front of you. Thirty years of Jian'an in the Three Kingdoms, after Liu Bei conquered Jiangzhou, Zhang Fei was sent to and stationed in Yuzhong to control Micang Road, and then defeated Cao Zhang in this case. He has been defending and has become the spokesperson of Suizhong. Today's Suizhong is managed by Nanchong City, Sichuan Province. It is located in the northeastern margin of the Sichuan Basin and is in the middle reaches of the Jialing River. It is a strong military town. It also has one of the most preserved ancient cities in the territory, and is known as the Yuanyuan Wonderland and the middle of the world.