Sichuanese mainly come from ancient Shu people and Ba people. During the Shang and Zhou Dynasties, the ancient Shu people mainly lived in the west side of Sichuan Basin, about in the mountainous area of Maoxian County, Aba Prefecture. With the growth of tribes, people from the ancient Shu kingdom gradually migrated to the interior of the Sichuan Basin and reached the Chengdu Plain.

At the same time, another Sichuan ancestor tribe, Ba people, under the oppression of Chu people, gradually moved from Hubei to the east of Sichuan Basin and established Ba country. Therefore, Sichuan Basin is also called Bashu. During the Warring States Period, King Pike of Qin Huiwen celebrated Sima Cuo's southward destruction of Bashu and changed Bashu into Shu and Ba counties.

Emperor Wu of the Han Dynasty divided the world into 13 states and changed Bashu region into Yizhou, which is the embryonic form of Sichuan as a province.

At the end of the Eastern Han Dynasty, the world was in chaos. Liu Bei entered Yizhou, established Shu Han, and became the first empire born in Sichuan. Later, whenever there was chaos in the world, Sichuan often became an important force in the separatist regime. Such as Li Xiong, Wang Jian and Meng Zhixiang.

In the Romance of the Three Kingdoms, we often hear the names of "East and West Rivers" and "Land of the Two Rivers", but the real name of "Sichuan" is after the Tang Dynasty. In the early Tang Dynasty, Yizhou was changed to Jiannan Road, and then it was divided into Chuandong Road and Chuanxi Road, namely Jiannan Dongchuan Road and Jiannan Xichuan Road, and administrative offices were set up in Chengdu and Santai respectively, referred to as "Two Rivers". During the reign of Emperor Xuanzong of the Tang Dynasty, Shannan West Road was added, so far, it was called "Sanchuan".

In the Song Dynasty, the land of Sanchuan was also called Chuanshan Road, so Sanchuan was also called No.3 Road, followed by Yizhou Road, Zizhou Road and Lizhou Road. During the Xianping period in Song Zhenzong, Kuizhou Road was added, so it was called "Sichuan-Shaanxi Four Roads". 100 years later, Song Huizong issued an imperial edict, calling Sichuan-Shaanxi Fourth Road "Sichuan" for short, hence the name of Sichuan.

In the Yuan Dynasty, the provincial system was implemented, and the Sichuan Basin was taken as the center, and this area was re-divided and renamed as "Sichuan Province", which can be regarded as the beginning of the establishment of Sichuan Province. Since then, during the Ming and Qing Dynasties and the Republic of China, the boundaries of Sichuan Province have been adjusted, and today's administrative regions of Sichuan Province have gradually formed.

Extended data:

Bashu mountains and rivers, known as "Xiongxian Youxiu" since ancient times: Emei is beautiful in the world, Qingcheng is quiet in the world, Jiange is dangerous in the world, and Kuimen is unique in the world. Through contemporary development, the characteristics of "magic and magnificence" have been added today: the magic of Jiuzhaigou landscape, the magnificence of Huanglong landscape, the interest of panda world and the strangeness of dinosaur world, which are the greatest feelings of today's tourists.

From the route, there are Jiuzhai, Huanglong, Siguniang Mountain and Gongga Mountain in the northwest, Jianmen Shudao in the north, Three Gorges scenery in the east, Longgang Geopark in the northeast, Bamboo Sea scenery in the south of Sichuan and Lugu Lake exploration in the south. The whole Bashu landscape layout is densely staggered, such as gold thread piercing pearls and pearls full of pots, and almost every county has tourist attractions.

Both Sichuan dialect and Chongqing dialect belong to southwest mandarin. Southwest Mandarin is a branch of northern language family, and it is the main Chinese popular in Sichuan and Chongqing (Bashu area) and surrounding provinces. Southwest Mandarin has about1600,000 users, second only to Japanese and more than German.

The current Southwest Mandarin was formed in the great migration movement of "Huguang filling Sichuan" during the Kangxi period of Qing Dynasty, and it was gradually evolved and merged by the Cuban Shu dialect popular in Sichuan before the Ming Dynasty and the immigrant dialects in Huguang, Guangdong and Jiangxi. Chengdu dialect is the standard pronunciation of Sichuan opera and various folk arts, and it is a branch of Sichuan dialect in Southwest Mandarin. At the same time, due to the barrier-free communication between Sichuan dialect areas, Sichuan dialect itself has no standard pronunciation.

Sichuan Province is located in the southwest hinterland of China, with an east longitude of 97 21'~108 33' and a north latitude of 26 03' ~ 3419'. Located in the upper reaches of the Yangtze River, it covers an area of 486,000 square kilometers, ranking fifth in China, and its east-west length is 1075.

It borders Shaanxi, Gansu and Qinghai in the north, Yunnan and Guizhou in the south, Chongqing in the east and Tibet in the west, with a total of 7 provinces (autonomous regions and municipalities). It is an important intersection and transportation corridor that undertakes South China and Central China, connects Southwest China and Northwest China, and communicates with Central Asia, South Asia and Southeast Asia.

References:

Baidu encyclopedia-Bashu

References:

Baidu encyclopedia-Sichuan