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Staff members check the snow condition on a bridge of Bijie-Duge section of Hangzhou-Ruili expressway in southwest China's Guizhou Province, Dec. 30, 2018. (Xinhua/Tao Liang)

Staff members check the snow condition on a bridge of Bijie-Duge section of Hangzhou-Ruili expressway in southwest China's Guizhou Province, Dec. 30, 2018. (Xinhua/Tao Liang)