Aerial photo taken on Feb. 26, 2017 shows a view of the Paotaiwan state wetland park in Wusong of Shanghai, east China. The park used to be the location for steel slag and iron sand mining station. In November 2013, the 18th Central Committee of the Communist Party of China held its third plenary session to focus on comprehensively deepening reform. In the five years after the session, China's ecological civilization system has been rapidly taking shape and the ecological environment is significantly improved. (Xinhua/Pei Xin)