Confucius emphasized that one should constantly reflect and check one's words and deeds at any time and place. In The Analects of Confucius, a disciple of Confucius once said, "I visit you three times a day: Are you unfaithful to others?" Don't believe in making friends? Can't you learn? "Self-cultivation is self-cultivation, which is one of the main projects of Confucian education.