Sister-in-law in the north means sister-in-law is the title of your brother's daughter-in-law, which is used as a polite title for the wife of your brother or friend.
"Scholars. The seventeenth time: I gave the rest of the money to his brother, rented two rooms and opened a small grocery store, and my sister-in-law took it back and divided it into two places to eat. If you are a neighbor, your neighbor Mr. Wang or Mr. Li, and their daughter-in-law, you should call them sister-in-law.
Taboos to get along with uncles and sisters-in-law
The first taboo is to avoid conflicts of interest with uncles and sisters-in-law, the second taboo is to respect each other's living habits, the third taboo is not to talk too much, and the fourth taboo is not to be too intimate.
Are uncle and sister-in-law husband and wife? They usually have more contacts and are the most suspected, so they are more demanding.
The taboo of getting along with uncles is that men and women are not close. First, men and women don't sit together and don't use cangue. Men and women can't sit together, but men and women must sit together. Men and women can't use the same pair of shackles, or even comb their hair with the same comb.
Second: men and women don't eat together for seven years. Men and women can't sit and eat together after they are seven years old. Brothers and sisters are still like this.