1. Yizhou during the Three Kingdoms period, including most areas of Sichuan, Chongqing, Yunnan, Guizhou and Hanzhong, and a small part of northern Myanmar, Hubei and Henan, was located in Chengdu, Shu County.

Yizhou was one of the three states at that time. Liu Bei occupied this place and established the Shu-Han regime. At the end of the Three Kingdoms, the Western Jin Dynasty destroyed Shu Han, divided Yizhou and established Liangzhou.

3. The Three Kingdoms (220-280) is a historical period connecting the Eastern Han Dynasty and the Western Jin Dynasty, which is divided into three regimes: Cao Wei, Shu Han and Dongwu. Battle of Red Cliffs and Cao Cao were defeated by Sun Liu's allied forces, which laid the rudiment of the tripartite confrontation among the three countries.