How should I treat my sister and brother-in-law?

I think your sister and your brother-in-law have the same idea. It can be seen from your sister's marriage, buying a house and borrowing money that it is not your brother-in-law, but your sister who treats your family like a fool. To put it bluntly, if this man is not married to your sister, do you know who he is? Will you lend him money? Will he get the goods for nothing? If it weren't for your sister's support, your sister would take advantage of her small family and her family. Would he take advantage of you? Your sister scolded your uncle, saying that you can see what she thinks without such parents.

So, what is the truth? But your sister is actually quite selfish. It doesn't really matter what kind of man she looks for. The important thing is that she doesn't think too much about your family, just wants to live a good life for herself. Her man was incapable, so she called her parents here.

As for what you should do, first of all, you understand that the key to the problem is not your brother-in-law. Maybe your sister stole the goods and didn't give money! What to do with this sister is the key to the problem. Now she is not calculating you too much, but mainly gnawing at your parents, who love her so much and indulge her. You can only say that your parents are willing to lend her money and put up with her husband getting the goods for nothing. You can only do your share of filial piety and don't think too much.