Chongqing and Sichuan have been affiliated for a long time in history. Chongqing is a part of Sichuan. However, in other historical stages and periods, Chongqing and Sichuan are parallel, and there is no subordinate relationship between them. Because of this, some Chongqing people will be disgusted with being called Sichuan people, and the 'Sichuan Chongqing' dispute also happens from time to time. So, does Chongqing belong to Sichuan? Why do you say that?
As early as the 11th century BC, in the Western Zhou Dynasty, Chongqing was the core of the Ba state at that time, while Sichuan was the kingdom of Shu. Both belong to the vassal states and have no subordinate relationship with each other. After the Qin Dynasty unified China, Ba County and Shu county were set up respectively, which changed for the first time until the Han Dynasty.
In Han Dynasty, Ba County and Shu County merged, which was called Yizhou. Later in the Three Kingdoms period, Yizhou became Liu Bei's main base. Then the war continued, the administrative region continued to shrink, Chongqing and Sichuan became independent. In the Tang Dynasty, the administrative areas were divided into "Dao". Sichuan belonged to Jiannan Dao, while Chongqing belonged to Shannan Dao.
In the Song Dynasty, the name "Sichuan" officially appeared. In the Song Dynasty, there were four roads in Sichuan, including Chongqing, which began to belong to Sichuan. After the yuan, Ming and Qing Dynasties, Chongqing's Sichuan attribute was further strengthened.
During the period of the Republic of China and the Anti Japanese War, Chongqing became an independent capital or municipality directly under the central government. At the beginning of the founding of new China, Chongqing was also a municipality directly under the central government until 1954. After that, it was reduced to prefecture level city, under the jurisdiction of Sichuan Province. Until 1997, Chongqing became a municipality directly under the central government again.
It is precisely because Chongqing belongs to Sichuan for a long time, and it has restored its status as a municipality directly under the central government after 1997, which has led to many disputes between the two places. For example, here are a few confusing brands and names.