Reverse culture shock refers to the phenomenon that it is difficult for those who live in other places to adapt to the local culture in a short period of time after they return to their hometown
Mary, an European girl, came to study in China. Although she had long heard that China does not use cash to pay, she was shocked in the first week: the uncle selling sweet potatoes downstairs was using Internet +, and there was a QR code on every stall in the vegetable market, not to mention supermarkets and shopping malls.