Li Zhanshu (2nd L), chairman of the Standing Committee of the National People's Congress, joins a voluntary tree planting activity in the eastern suburbs of Beijing, capital of China, April 2, 2018. Other Chinese leaders including Xi Jinping, Li Keqiang, Wang Yang, Wang Huning, Zhao Leji, Han Zheng and Wang Qishan also attended the event. (Xinhua/Yao Dawei)