The sons of fathers' cousins are called cousins, that is, cousins, cousins and cousins. Father's cousins are generally called cousins. My uncle is the son of my uncle/grandfather, or my uncle's father. Uncle is aunt's son, or uncle. Father's cousin is called cousin, father's cousin is called cousin, and he is called cousin/nephew. Note that the menstrual family and uncle's father's family are not cousins, but relatives. Kinship address, address to relatives, or address to people who are related to each other. In ancient China, people with the same surname and foreigners with different surnames were called relatives, usually referring to any blood relatives or in-laws within five generations.