There are three reasons:
First, because fashionable people fear gods and are afraid that their children’s horoscopes will conflict with their parents and suffer disaster in the future, so they avoid affectionate names and teach their children to call them this way since they were young. Some of them are The fortune teller taught that the child should move to another house to live with his ancestors, otherwise it would be unfavorable. How can you give your own child to someone else? So I had to change my title and replace it with aunt, uncle, etc. If the conflict is not serious, it is usually called by the brothers and sisters of the parents, such as aunt and uncle; in serious cases, they are called aunt and uncle; in the most serious cases, they must be given as children to immortals and gods for protection. In order to protect their children from premature death, parents would call them this way when they were young. When they grow up, they still call them this way. It becomes a habit.
Secondly, "Dad, Mom" ??is a northern dialect, which is an elegant dialect. Except for urban and educated families who use this title especially, or "Adi, Aniang", rural people rarely use it. Such words are still called by common people. Some sons of overseas Chinese call their parents "Abba (lower tone), Ama (upper tone)", which is the altered pronunciation of "father, mother".
Thirdly, when they were arrested for family planning, they had more children, so they just called them aunties. Haha, they deceived those who arrested them.