Why can't aunt and aunt get along well?

I think so, too. I'm also a sister-in-law and aunt. I think the most important thing is to be measured.

As a sister-in-law: You are married and have your own small family, but you still have to put your own small family first. If your brother and sister-in-law live with your parents, then you should control the number of times you go back, and don't think about swearing sovereignty at home, because you still have your brother, and your brother is married, and your sister-in-law is the one who will live with your brother for life. So try not to disturb their lives. It's the same for your parents to go to your house. In addition, if you have children, try to take care of them at home. You should understand that your brother and sister-in-law are the main people your parents will take care of in the future. You should learn to be grateful and self-reliant.

As a sister-in-law: learn to accept the fact that your husband has a sister or elder sister. Since you are a sister-in-law, you must look like a sister-in-law. There are parents, your children and your husband in this family. Face up to the existence of aunt, and strive to integrate yourself into it and become a family. If it fails, minimize contact. If you really have excessive behavior and words, you should dare to speak out and treat your sister-in-law as a guest.