Chinese President Xi Jinping (front) plants trees with other leaders and representatives from the Asia-Pacific Economic Cooperation (APEC) to mark friendship in the APEC family in Beijing, capital of China, Nov. 11, 2014. (Xinhua/Ju Peng)

Chinese President Xi Jinping (C Front) and U.S. President Barack Obama, Chilean President Michelle Bachelet, Sultan of Brunei Hassanal Bolkiah, Russian President Vladimir Putin and Indonesian President Joko Widodo (L to R) walk to plant trees with other leaders and representatives from the Asia-Pacific Economic Cooperation (APEC) to mark friendship in the APEC family in Beijing, capital of China, Nov. 11, 2014. (Xinhua/Lan Hongguang)