4 new subway lines open in Guangzhou

A passenger scans a QR code of mobile payment to take subway at the Huadu Moter City Subway Station in Guangzhou, capital of south China's Guangdong Province, Dec. 28, 2017. Four new subway lines opened in Guangzhou on Thursday. Guangzhou now has 13 subway lines in all, covering a total length of 390.6 km. (Xinhua/Wu Lu)