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Visitors view a sample of yak head displayed during the exhibition on Tibetan yaks in Guangzhou, capital of south China's Guangdong Province, Dec. 28, 2017. (Xinhua/Liang Xu)
Visitors view a sample of yak head displayed during the exhibition on Tibetan yaks in Guangzhou, capital of south China's Guangdong Province, Dec. 28, 2017. (Xinhua/Liang Xu)