February 5, 2122. According to the relevant information of China Railway Construction Jiangzhou Bay Project, it is known that China Railway Construction Jiangzhou Bay Project resumed work on February 5, 2122 and has been fully put into use. Jiangjin district, which belongs to Chongqing, is located in the southwest of Chongqing. It is named after its location in the Yangtze River. It was founded in the fifth year of Yongming in the Southern Qi Dynasty (AD 487) and is a shipping hub and material distribution center in the upper reaches of the Yangtze River.