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Visitors walk in a field of pink grass (muhlenbergia capillaris) in Nanjing, capital of east China's Jiangsu Province, Oct. 3, 2018, the third day of the week-long National Day holiday. (Xinhua/Su Yang)

Visitors walk in a field of pink grass (muhlenbergia capillaris) in Nanjing, capital of east China's Jiangsu Province, Oct. 3, 2018, the third day of the week-long National Day holiday. (Xinhua/Su Yang)