In the case that Apple's mobile phone Beijing Trade Union app can't be opened, you can first change the system language of Apple's mobile phone to English, restart Apple's mobile phone after the change, and then try to open the App. If there is nothing wrong with Apple's mobile app, switch its system language to Chinese. In addition, you can double-click any tab button at the bottom of Apple's mobile phone 10 times, so the app will be forced to refresh immediately. This refresh process takes some time and can be completed after the refresh is completed.