No . 1 Chengdu, Sichuan Province. According to a survey co-conducted by Oriental Outlook magazine under Xinhua News Agency and Blue Book of Cities in China compiled by China Association of Mayors, Chengdu, Hangzhou and Nanjing are among the happiest cities in China in 2016. This photo shows a train suspended from a railway line runs in Chengdu, capital of southwest China's Sichuan Province, Nov. 21, 2016. (Photo source: Xinhua/Jiang Hongjing)
