"Cultivation".
The idea that a gentleman should be humble comes from "Cultivation of the Self" written by Zeng Guofan in the Qing Dynasty. It refers to Zeng Guofan's discovery that working hard has the benefits of working hard. Because clumsy people don't know how to use tricks or take shortcuts. They just know how to get through problems when they encounter them. Therefore, they don't leave any blind spots in their work and have a good foundation. On the contrary, those who are smart are unwilling to make stupid efforts and go around when encountering difficulties, laying a loose foundation. Zeng Guofan's philosophy of life is very unique, that is, he is clumsy. He said that the most clumsy in the world can beat the most skillful in the world.