This is a typical bird's nest. I don't care where you live!
There is such a fable. I don't know if you have heard of it.
In the desert, it was freezing, and the camel begged its owner, "Can I put my head in the tent?" Master agreed.
After a while, the camel brayed again and said, "Can I put my predecessor in?" The master agreed again.
After a while, the camel whined again, "Can I go in all over?"
After the owner agreed, he was squeezed out of the tent by the camel.
This brother-in-law is like this camel. If he is grateful to others, he will push his luck. There are many such examples in reality. This incident tells us that to be a good person, you must have a bottom line, otherwise, you will be wronged in the end!