Chinese President Xi Jinping delivers a keynote speech at the Asia-Pacific Economic Cooperation (APEC) CEO Summit in Da Nang, Vietnam, Nov. 10, 2017. (Xinhua/Li Tao)

Chinese President Xi Jinping, also general secretary of the Communist Party of China Central Committee, and Nguyen Phu Trong, general secretary of the Communist Party of Vietnam Central Committee, witness the signing of a memorandum of understanding on joint implementation of the Belt and Road Initiative and Vietnam's "Two Corridors and One Economic Circle" plan, as well as a series of cooperation documents in such areas as industrial capacity, energy, cross-border economic cooperation zone, e-commerce, human resources, economy and trade, finance, culture, health, media, social science, and border defense, after their talks in Hanoi, Vietnam, Nov. 12, 2017. (Xinhua/Yao Dawei)