What is the ideal city, which has been entangled in Xishu and Soochow?

You're probably asking about Jingzhou City. This city was called Jiangling City in the Three Kingdoms Period, and it was the seat of Jingzhou, which is now the seat of Jingzhou City in Hubei Province. During the period of Liu Biao, Jiangling was the storage place of Jingzhou materials, and its geographical position was very important, which was a battleground for military strategists. When Cao Cao went south to Jingzhou, Liu Bei defeated Jiangling, but without success, Jiangling was occupied by Cao Cao. After Battle of Red Cliffs, Cao Cao returned to the north, but Jiangling was still occupied by Cao Jun's general Coss. Zhou Yu of Soochow besieged Jiangling for a year and finally won Jiangling. Soon, Liu Bei put forward the idea of "borrowing Jingzhou" to Sun Quan, who delivered Jiangling City to Liu Bei. After Liu Bei entered Sichuan, Guan Yu guarded Jingzhou and his office was located in Jiangling. After the fall of Guan Yu, Jiangling returned to Soochow. At this point, Jiangling's "property rights" have not changed.