CHENGDU, China, March 11, 2021 /PRNewswire/ -- News provided by China Report： Chengdu-Chongqing high-speed railway bullet train. Sichuan has formed a whole industrial chain of the rail transportation industry Located in the upper reaches of the Yangtze River, the Chengdu-Chongqing economic circle is the most densely populated area with the highest concentration of industries and the most cities in west China. Statistics showed that the Chengdu-Chongqing area registered a total GDP of close to