What if WeChat sends a message to the class teacher and doesn't reply?

Messages can be blocked based on WeChat, which can be done according to the process:

Never mind, just wait for your reply.

If it's urgent, send a text message.

If the text message still doesn't return, then call.

If you don't answer the phone, there is nothing you can do. You've tried all the tricks anyway.

Finally, you can struggle and let other students take a message.