What does "I can be a teacher in three provinces every day" mean?

If I reflect on myself many times every day, I can be a teacher.

I can be a teacher in three provinces every day

Interpretation: "I can be a teacher in three provinces every day" is a sentence composed of two famous sayings, I: I; Day: every day: three: in ancient times, three was not an exact number, but many general meanings; Province: introspection; In favor of: when, as. I reflect on myself many times every day, so I can be a teacher.

Source: I save my life three times a day, from The Analects of Confucius: Zeng Zi said: "I save my life three times a day: Are you unfaithful to others?" Don't believe in making friends? Can't you learn? "Ceng Zi said," I reflect on myself many times every day. Do I try my best to serve others? Is it honest and trustworthy to associate with friends? Have you reviewed what the teacher taught you? This sentence aims to emphasize the importance of self-cultivation. "You can be a teacher" comes from The Analects of Confucius: Confucius said: "Looking back and learning new things, you can be a teacher. Confucius said: "When reviewing old knowledge, we can gain new experiences and new discoveries. It is enough for you to be a teacher. " This sentence emphasizes the importance of reviewing the past and learning the new.