Top CPC and state leaders attend tree planting event in Beijing (6)

Zhang Dejiang (C), chairman of the Standing Committee of China's National People's Congress, plants a sapling during a tree-planting event in Sunhe Township of Chaoyang District in Beijing, capital of China, April 3, 2015. Top Communist Party of China (CPC) and state leaders Xi Jinping, Li Keqiang, Zhang Dejiang, Yu Zhengsheng, Liu Yunshan, Wang Qishan and Zhang Gaoli attended a tree planting event in Beijing on Friday. (Xinhua/Ju Peng)