The details are as follows: If you are a father, his aunt's children are his cousins, and his father's children are called his cousins. If you are a mother, her aunt's children are her cousins, and her aunt's children are called cousins.
Maternal title: uncle: mother's brother, also known as uncle. Menstruation: My uncle's wife is also called menstruation, mother and nephew. Menstruation: Mother's younger sister, also known as menstruation, Menstruation and menstruation. Uncle: Aunt's husband. Junior address: nephew: brother's son. Niece: My brother's daughter. Nephew: A man calls his sister's son. Niece: The daughter of a man's sister. Nephew: A woman calls her sister's son. Aunt and niece: Women call their sisters' daughters.