Joke Collection Website - Mood Talk - What's the name of brother-in-law's cousin?

What's the name of brother-in-law's cousin?

Sister or sister?

Because she and her brother-in-law's sister are the same generation. Brother-in-law's sister is younger than you and older than you.

Family appellation refers to a family and relatives, which has formed a traditional kinship inheritance relationship in history and has been fixed into various appellations according to generations. There are similarities and differences between oral appellation and written appellation. Moreover, the face-to-face address of outsiders and each other is different.