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Miners check the security of a 560-meter-deep underground mine in Huaibei, east China's Anhui Province, Feb. 16, 2018. Many people still stick to their posts during the Spring Festival holidays. (Xinhua/Huang Shipeng)
Miners check the security of a 560-meter-deep underground mine in Huaibei, east China's Anhui Province, Feb. 16, 2018. Many people still stick to their posts during the Spring Festival holidays. (Xinhua/Huang Shipeng)