The change from red team to green code always indicates that the application is in progress.

Update maintenance. Guizhou Health Code app is a mobile phone application that displays health codes online. When using this application, the text in the application is always displayed in green code from red code on the interface, which is caused by the update and maintenance of the software app and the shutdown of the server. If this happens, you can open the login normally after the update and maintenance are completed.