Sichuan is abbreviated as Sichuan or Shu, and it was also called "Bashu" because Sichuan (including Chongqing) belonged to the two kingdoms of Ba and Shu in the pre Qin period. Sichuan gets its name from the four roads of Yizhou, Zizhou, Lizhou and Kuizhou (in addition, there are Minjiang River, Tuojiang River, Jialing River and Wujiang River in Sichuan) [Chengdu City Topic]