Joke Collection Website - Mood Talk - What was the teacher’s mantra in those years?

What was the teacher’s mantra in those years?

Under the overwhelming holiday hot marketing

Are you also missing that school that you once thought was "annoying"?

Thinking of the playful and angry scoldings when playing with classmates...

Thinking of the familiar mantras of teachers...

. . . . . .

Then, here comes the problem!

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In those years, teachers said many "popular" mantras. Which one do you think is the most impressive?