A passenger scans a QR code of Alipay, a mobile payment app, to take subway at the Fengtan Road Subway Station in Hangzhou, capital of east China's Zhejiang Province, Dec. 27, 2017. Passengers in Hangzhou no longer need a ticket to take the subway. They can just swipe their smartphones, making Hangzhou the first city in China to realize mobile payments on its subway. Starting from Dec. 27, users of Alipay, a mobile payment app, will get a QR code on their phones, which they can use to enter the electric gates at all 72 subway stations in the city. The price will be deducted from their Alipay account after they swipe to exit the subway. Similar services have also been opened by UnionPay. With its quick pass installed in smartphones, passengers can also take the subway without a ticket. (Xinhua/Huang Zongzhi)