Welcome to China. You Probably Can’t Buy Anything, Though.
“China was never an easy place for tourists, but lately just about everything seems to have gone square-shaped—as in the payment-app QR code needed to unlock much of the Middle Kingdom. It’s how people hail taxis, consult doctors, pay for meals and book flights. Even beggars are asking for money via QR code. Not needing a wallet has simplified life for China’s 1.4 billion people, but it can leave the 140 million tourists arriving in the mainland each year helpless.”