Official operation of Douguan Station marks full operation of 24 stations on subway Line 1 in Guiyang

A man prepares to take subway outside the Douguan Station in Guiyang, capital of southwest China's Guizhou Province, Dec. 28, 2019. The official operation of Douguan Station on Saturday marked the full operation of 24 stations on the subway Line 1 in Guiyang. (Xinhua/Liu Xu)