Du Yuesheng's ten famous sayings on how to deal with people are:

I am not afraid of gentlemen, and I will not mess with thieves. Don’t do things to the absolute limit, but leave room for success. No matter how much money you save, it is worth more than a mountain of gold and a sea of ??gold. The use of friendship is like heaven and earth. Don't be afraid of being used by others. If others use you, it shows that you are still useful. Eating is real achievement, gambling is hedging, and whoring is failure. The glass is always full and the table is always full. There was no justice in Shanghai during the fall, and there was no justice in Shanghai after victory. People can be illiterate, but they cannot be illiterate. The scolding is fake, but the money is real. As a human being, you cannot be a hedgehog. If you can't make enemies with others, don't make enemies. You won't be with anyone for the rest of your life.