It is illegal to cheat you into giving you cash and then scanning the code. Fraud is illegal in China, no matter how it is carried out. Whether it is to scan the code after giving you cash or to cheat in other forms, it is illegal, involving fraud, theft, illegal acquisition of property and other crimes. Scan code fraud is a common means of online fraud. Fraudsters use deception, false information or other means to let the victim scan the QR code and pay money, thus illegally obtaining property. This kind of behavior is recognized as a crime of fraud, which violates the relevant provisions of the criminal law.