1. Poor quality of QR code: If the QR code pattern is poor, blurred or damaged, the scanning device may not be able to read it accurately. You can try to get the QR code again or make sure it is clearly visible.
2. The QR code is blocked: If the QR code is blocked by other objects or obstacles, the scanning device cannot read it directly. Please ensure that the QR code is not blocked, and the scanning device can directly aim at the QR code.
3. Scanning equipment problems: The scanning equipment you are using may have problems, such as camera failure or software problems. You can try to scan the QR code with other scanning devices or update the software version of the scanning device.
4. The QR code has expired: If the QR code is disposable or has a limited validity period, it cannot be scanned after expiration. For the expiration date information of the QR code, please consult the QR code provider.
If you still can't scan the QR code of Xuelian Shangxi, please ask the relevant technical support department for help, and they may be able to provide a more specific solution.