Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee, presents a "golden key" of the Vietnam-China Friendship Palace to Nguyen Thi Kim Ngan, chairwoman of the National Assembly of Vietnam, in Hanoi, Vietnam, Nov. 12, 2017. Xi Jinping and Nguyen Thi Kim Ngan attended the inauguration and handover ceremony of Vietnam-China Friendship Palace and the inauguration ceremony of the Hanoi China culture center here on Sunday. (Xinhua/Li Tao)