A number of touch-screen vending machines offering digital yuan payment service are seen at the People's Square Station of the Shanghai Metro, March 10, 2021. A click on the touch-screen will pop up a digital yuan payment option, an additional choice except WeChat Pay, Alipay and UnionPay. Customers can scan the QR code to complete their purchase. (Photos: Chinanews.com)

A number of touch-screen vending machines offering digital yuan payment service are seen at the People's Square Station of the Shanghai Metro, March 10, 2021. A click on the touch-screen will pop up a digital yuan payment option, an additional choice except WeChat Pay, Alipay and UnionPay. Customers can scan the QR code to complete their purchase.

A number of touch-screen vending machines offering digital yuan payment service are seen at the People's Square Station of the Shanghai Metro, March 10, 2021. A click on the touch-screen will pop up a digital yuan payment option, an additional choice except WeChat Pay, Alipay and UnionPay. Customers can scan the QR code to complete their purchase.

A number of touch-screen vending machines offering digital yuan payment service are seen at the People's Square Station of the Shanghai Metro, March 10, 2021. A click on the touch-screen will pop up a digital yuan payment option, an additional choice except WeChat Pay, Alipay and UnionPay. Customers can scan the QR code to complete their purchase.