Wenchuan immigrants Fengjie

I have seen two expressions: 1. In ancient times, our ancestors created the division of Sichuan culture in the Sichuan Basin and its surrounding areas. Qin is called Ba County and Shu County, and Han is called Yizhou. In the Tang Dynasty, it was changed to Jiannan Road, which was later divided into Jiannan Xichuan Road and Jiannan Dongchuan Road, with administrative offices in Chengdu and Santai respectively. There were only two rivers in Tang Xuanzong's past, so it was called "two rivers" for short. During the reign of Emperor Xuanzong of the Tang Dynasty, this division was adjusted, and Jiannan Xichuan Road, Jiannan Dongchuan Road and Shannan West Road were established (Shannan West Road governs the present southern Shaanxi and northern Sichuan areas, where Khan ruled). In this way, there is the abbreviation of "Sanchuan". Due to this adjustment, in addition to Iraq (Chengdu), Zi (Santai) and Li (Khan), a new Kuizhou (Fengjie) was established. Therefore, this area was called "Chuanxia Road 4" in the Song Dynasty, hereinafter referred to as "Chuan". This is the origin of our Sichuan. 2. Sichuan is called Sichuan because there are four tributaries of the Yangtze River: Jialing River, Minjiang River, Fujiang River and Tuojiang River. Sichuan is named after these four rivers.