Tourists visit the Hefei Ocean World in Hefei, capital of east China's Anhui Province, Oct. 3, 2017, during the National Day holiday. (Xinhua/Liu Junxi)
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Tourists visit the Hefei Ocean World in Hefei, capital of east China's Anhui Province, Oct. 3, 2017, during the National Day holiday. (Xinhua/Liu Junxi)
