Wang Qishan (1st L), a member of the Standing Committee of the Political Bureau of the Communist Party of China (CPC) Central Committee, plants a sapling with students during a tree-planting event in Xihongmen Township of Daxing District in Beijing, capital of China, April 5, 2016. Top leaders Xi Jinping, Li Keqiang, Zhang Dejiang, Yu Zhengsheng, Liu Yunshan, Wang Qishan and Zhang Gaoli attended a voluntary tree-planting in Beijing on Tuesday. (Xinhua/Rao Aimin)