A bucket of rice keeps a benefactor and a stone of rice keeps an enemy. It means giving someone a bucket of rice at a critical time is like giving charcoal in the snow, and people will be grateful. Over time, if people pay too much, they will be insatiable, take these payments for granted, and once they stop helping, they will be resentful.
Explain in detail:
When a person is starving to death, give him a liter of rice, and the other person will regard himself as a benefactor; If you give him a bucket of rice, the other person will think that since you can afford a bucket of rice, you should give more. If you don't give it, you will become an enemy. When giving becomes a habit, it becomes an unshirkable responsibility.
This golden advice encourages people to be wise (principled) when helping others, but it also implies some weaknesses in human nature, reflect on their own contentment, accept the help of others wisely, and be deeply grateful. The weakness of human nature should be avoided in a reasonable way, because we can't expect everyone's moral level to reach the level of a saint, even if we help others, we should use appropriate methods.