CHONGQING (CQNEWS) -- On May 16, overlooking the downtown areas of Chongqing from Xiejiawan Interchange in Jiulongpo District, you can see the blue and clear sky, white clouds as well as the panoramic view of Chongqing. In recent years, concerted efforts to implement“Blue Sky Action” have been made and five major measures about“Chongqing Blue” have been deepened throughout Chongqing; the air quality has been improved continuously, and“Chongqing Blue” appears frequently. (Photographed by Zheng Yu/Vision Chongqing)