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Tourists visit Dr. Sun Yat-sen's Mausoleum in Nanjing, capital of east China's Jiangsu Province, April 6, 2018, during the three-day Qingming Festival holiday. (Xinhua/Liu Jianhua)
Tourists visit Dr. Sun Yat-sen's Mausoleum in Nanjing, capital of east China's Jiangsu Province, April 6, 2018, during the three-day Qingming Festival holiday. (Xinhua/Liu Jianhua)