Chinese President Xi Jinping (2nd R), also general secretary of the Communist Party of China Central Committee and chairman of the Central Military Commission, watches an exhibition on Hainan's progress over the past three decades at the Hainan Museum in Haikou, south China's Hainan Province, April 13, 2018. Xi made an inspection tour in Hainan from Wednesday to Friday. (Xinhua/Xie Huanchi)