The source is the Analects of Confucius: "Confucius said: I am determined to learn five out of ten, stand at thirty, not be confused at forty, know my destiny at fifty, follow my ears at sixty, and do what I want at seventy, without exceeding the moment." Although Confucius said it himself, it was extended to describe the world outlook and mental maturity that traditional scholars in China should have. However, in feudal society, "following a gentleman" is not within the scope of women's social choice, and the strong exclusiveness of social identity leads to it becoming a description method suitable for male groups in the traditional sense.