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People watch a performance at the Underwater World in Qingdao, east China's Shandong Province, Feb. 18, 2018, the fourth day of the Spring Festival holiday. (Xinhua/Li Ziheng)
People watch a performance at the Underwater World in Qingdao, east China's Shandong Province, Feb. 18, 2018, the fourth day of the Spring Festival holiday. (Xinhua/Li Ziheng)