Chongqing is located at the junction of southwest China and central China, in the east of Sichuan Basin, with numerous hills and mountains. Winter is relatively warm, and summer is often sunny and hot. The annual rainfall is about 1000 mm. This is the upper reaches of the Yangtze River, which flows from west to east. The main tributaries in China are Jialing River and Wujiang River. The provinces adjacent to Chongqing are Sichuan, Guizhou, Hunan, Hubei and Shaanxi. On both sides of the Yangtze River, which borders Hubei in the northeast of Chongqing, are the world-famous Three Gorges. Now, due to the construction of the Three Gorges Project, Wanxian and Fuling along the Yangtze River have become the Three Gorges reservoir area. Chongqing was a country in ancient times. More than two thousand years ago, Qin destroyed Pakistan. During the Three Kingdoms period, it was under the jurisdiction of Shu. Reunification after Wei and Jin Dynasties. Chongqing got its name from the Song Dynasty. Established in 1929. After War of Resistance against Japanese Aggression, the National Government moved inward and Chongqing became the capital. 1949 165438+ Chongqing was liberated at the end of October. At that time, it was the headquarters of the leading organs of the southwest party, government and army, and it was a municipality directly under the central government. 1955 area cancelled. Chongqing belongs to Sichuan. From 65438 to 0997, Chongqing became the fourth municipality directly under the Central Government of China. Chongqing opened its port very early, and its industry and commerce are relatively developed. During the construction of War of Resistance against Japanese Aggression and the Third Line in 1960s, a large number of industrial enterprises moved in, forming the largest industrial center in Southwest China. Chongqing has been directly under the central government for ten years. Today, Chongqing has stood at a new starting point of development. The earlier residents of Chongqing were Ba people, now called Tujia people, and still live in the southeast of Chongqing. But most Chongqing people are descendants of immigrants who moved in after the Ming and Qing Dynasties.