Boys pose for photos in front of a 3D-painting of a subway train during an exhibition in Shenzhen, south China's Guangdong Province, Aug. 27, 2018. Shenzhen now has 7 subway lines, with total length of 265 kilometers and transporting an average of 4.28 million passengers per day. (Xinhua/Mao Siqian)
Passengers pose for a selfie in a special train marking the 20th anniversary of the subway operation in Shenzhen, south China's Guangdong Province, Aug. 27, 2018. Shenzhen now has 7 subway lines, with total length of 265 kilometers and transporting an average of 4.28 million passengers per day. (Xinhua/Mao Siqian)
Staff members pose for photos during a celebration for 20th anniversary of Shenzhen Subway in Shenzhen, south China's Guangdong Province, Aug. 27, 2018. Shenzhen now has 7 subway lines, with total length of 265 kilometers and transporting an average of 4.28 million passengers per day.(Xinhua/Mao Siqian)
Staff members take photos during an exhibition in Shenzhen, south China's Guangdong Province, Aug. 27, 2018. Shenzhen now has 7 subway lines, with total length of 265 kilometers and transporting an average of 4.28 million passengers per day. (Xinhua/Mao Siqian)
Passengers are seen in a special train marking the 20th anniversary of the subway operation in Shenzhen, south China's Guangdong Province, Aug. 27, 2018. Shenzhen now has 7 subway lines, with total length of 265 kilometers and transporting an average of 4.28 million passengers per day. (Xinhua/Mao Siqian)
