Brothers’ ranking titles: In ancient times, Bo, Zhong, Shu, and Ji were used to express the ranking order among brothers; Bo was the eldest, Zhong was the second, Uncle was the third, and Ji was the youngest. The father's elder brother is called "Father", the father's second brother is called "Zhongfu", the brother of Zhongfu is called "uncle", the youngest uncle is called "Ji's father", and later all the father's brothers are collectively called "uncle".

Parents are also called Gaotang, Chunxuan, parents, knees, kaohe, etc.

Extended information:

Name is a cultural phenomenon. From the title of an era, we can get a glimpse of the style of an era. Titles are also a mirror. The change of title is a cultural change and is also regarded as a reflection of historical culture.

The title of Chinese people is essentially a history of the development of Chinese culture, which contains the precipitation and changes of the long cultural history of the Chinese nation. Chinese people's titles are a reflection of clan lineage, customs, rank, status, reputation, etc. Elders, juniors, superiors, and subordinates each have their own set of titles, and no one can go beyond them. From the titles, we can see that Chinese people attach great importance to rituals and customs such as patriarchal etiquette, respect for elders and the younger, and the way they express official positions and imperial examinations. Throughout the ages, the names of Chinese people have not only reflected people's concept of success, but also conveyed a "humility spirit" of "lowering oneself". This spirit of life must be reflected in people's language and names.

Reference: Baidu Encyclopedia ?Title