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Chinese President Xi Jinping, also general secretary of the Communist Party of China (CPC) Central Committee and chairman of the Central Military Commission, visits the Mogao Grottoes in Dunhuang, a key cultural heritage site under state-level protection, during his inspection tour of northwest China's Gansu Province, Aug. 19, 2019. Xi inspected the work of cultural relics protection and study, as well as efforts to promote China's great history and fine culture. (Xinhua/Ju Peng)