What should I pay attention to when I meet my future sister-in-law for the first time?

If she has entered the door, of course, she will call her sister-in-law. If you don't come in, call your sister. When you meet her, you should pay attention to manners first, and don't stare at her all the time. If she comes to your house, you should take her for a walk more often to familiarize her with your environment. Don't say anything deliberately. You can ask her about her hometown, such as customs. Don't be too critical of her. Speak politely.