Elders refer to older predecessors, that is, people who are one generation older than themselves, and are called elders. Refers to the parents' generation and people older than their parents; It refers to people of the same age who are called uncles, aunts, parents, uncles, grandfathers and grandmothers, and other names are mostly between relatives, such as uncles, menstruation, uncles' milk and uncles' uncles.