since ancient times, it has been said that a friendship between gentlemen is as light as water, and the communication between gentlemen should be based on morality, and the friendship should be elegant, pure and light as water. Brothers should be more open-minded, not wary, not too polite and polite, and not too humble. You can get along easily and naturally, and your mood is as clear and transparent as water. When there is wine and meat, * * * share it, when there is trouble, * * * share it, and even leave the trouble to yourself, so that the brothers can reduce the burden. This is the good brother of the iron buddy.