What is the relationship between brother and sister?

Sister-in-law refers to the relationship between brother and brother's wife. Aunt and aunt mean the same thing. In some areas, they generally refer to the wife of a brother or the wife of a brother who has a very good relationship with them.

Brothers and sisters usually have three meanings:

In some contexts, "brothers and sisters" can refer to "brothers and sisters", for example, "My parents are at work and my brothers and sisters are at school."

Second, in some areas, it usually refers to the wife of a younger brother or the wife of a brother who has a very good relationship with him, provided that he is younger than himself, otherwise he is called a sister-in-law.

Third, it can generally refer to the names of friends, girlfriends or wives who are younger than themselves. Usually northerners use this name more.

Appellation of family relationship

Cousin: Daughter of aunt and uncle.

Cousin: The son of an uncle or aunt.

Note: The son of matriarchal social aunt is Tang. In a patriarchal society, uncle is the hall.

Cousin: Daughter of aunt and uncle.

Cousin: The son of an uncle or aunt.

Brother and sister: My brother's grandmother.

Sister in law: My brother's grandmother.

Sister: My sister's grandfather.

Niece: Sister's daughter.

Nephew: Sister's son.