Chinese top state and Party leaders Hu Jintao, Wu Bangguo, Wen Jiabao, Jia Qinglin, Li Changchun, Xi Jinping, Li Keqiang, He Guoqiang and Zhou Yongkang joined Beijing residents in a tree planting event on Saturday to mark the 30th anniversary of the country's volunteer tree planting campaign.
Chinese leaders join beijingers for tree planting