jiangjinquIntroduction：Introduction to Jiangjin: Jiangjin District is located in the southwestern part of Chongqing. It is named as the important shipping hub and material distribution center in the upper reaches of the Yangtze River. It is also the grain producing area and the land of fish and rice in the eastern Sichuan region. Jiangjin District is bounded by Banan District and Qianjiang District in the east, Xishui County in Guizhou Province in the south, Yongchuan District in the west and Hejiang County in Sichuan Province. It is connected to Laoshan District, Jiulongpo District and Dadukou District in the north. It covers an area of ​​3,200 square kilometers and lives at 123.31. Ten thousand people (2010). Contains 4 streets and 25 towns. [2-3] Jiangjin District is the “Hometown of Longevity in China” and has won the honorary titles of “National Double Support Model City”, “National Land and Resources Conservation Intensive Model Area” and “National Earthquake Prevention and Disaster Reduction Work Advanced Area”.