Social security query always shows maintenance

Query the reasons why the system is under maintenance, the system is being upgraded, system failure, etc.

1. The query system is under maintenance: If the social security query system needs routine maintenance or emergency repair, a maintenance prompt will appear and social security information cannot be queried.

2. The query system is being upgraded: When the social security query system is upgraded, a maintenance prompt will also appear and social security information cannot be queried.

3. System failure: The social security query system failed, resulting in the inability to query social security information normally.