Photo taken on Oct. 13, 2017 shows the trees of populus euphratica trees in Ejin Banner, north China's Inner Mongolia Autonomous Region. Comprehensive progress has been made since the report delivered at the 18th National Congress of the Communist Party of China (CPC) in 2012 included ecological development as a major task in the country's overall plan and proposed building a "beautiful China" as a grand goal. (Xinhua/Li Xiaoguo)