Ping An Baiyun shows no green code.

Honey, it's normal. It's okay. When the health code turns black, it can be handled according to the following reasons: 1, apply for the health code for the first time or reapply. If the health code is black, it means that the health code applied by the user is under review, and the green code, yellow code and red code will be displayed after approval. 2. The mobile phone has no network data, resulting in the health code image not being refreshed, and the background color of the health code is black. At this point, you can open the network data and click the refresh button to try to change it to the normal color of the health code. 3. If the user fails to authenticate or verify the health code after application, the health code will be displayed in black and needs to be re-verified, and the color of the health code will not be displayed until it is approved. 4. If the health code is displayed in black for a long time after taking the above measures, you can contact the customer service hotline on the health code page to explain the situation and solve it through transcoding.