How to tell the teacher to go to bed early?

Face-to-face communication, phone call or text message.

1, face-to-face communication: You can go directly to the teacher, say hello to the teacher, and then say, "Teacher, you have worked hard, go to bed early."

2. Telephone or SMS: If you are not with the teacher, you can convey greetings and concerns to the teacher by telephone or SMS. For example, you can send a text message saying, "Teacher, you have worked hard. Don't be too tired. Go to bed early. " .