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Chinese President Xi Jinping (R front), also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, talks with designers and staff members of manned submersible "Shenhai Yongshi (Deep Sea Warrior)", at the Institute of Deep-sea Science and Engineering of the Chinese Academy of Sciences, in Sanya, south China's Hainan Province, April 12, 2018. Xi made an inspection tour in Sanya on Thursday. (Xinhua/Li Xueren)