Generally, this word is only available to clans with ancestral temples, so that clans can find their kin when they go out. The patriarch will arrange the word "Zi" among the clans of past dynasties, and this word will be listed in your name, indicating your seniority in the clan.

For example, the typesetting order in the Li family is loyalty, filial piety, festival and righteousness. Loyalty is the greatest generation. If you meet people of the same race in other places, for example, your name is Li Xiaoping and the other person's name is Li Yinan, it means that you are the other person's grandfather, and the other person will judge your seniority according to the typesetting. Each generation takes its name according to the typography in the genealogy. General typesetting is designed by ancestors in advance. Every few generations, the typesetting has to be redesigned by the patriarch.

The most obvious example is phonology, and the tradition of typesetting is still inherited. Degang Guo and Xu Deliang are German contemporaries, so they are brothers and sisters.