A detailed explanation of four big noble surnames in ancient China

China's aristocratic surnames change with the times. For example, Cui, Lu, Li and Zheng in the Central Plains in the Tang Dynasty were called the four famous families, and even the royal family was not as noble as them. Coupled with the change of dynasties, the royal surnames of the former dynasties were withdrawn, and it was really difficult to say clearly all the aristocratic surnames, but the surnames of saints such as Confucius, Mencius and Yan could be determined, and the national surnames of powerful dynasties were basically considered. As for what lz wants to know, I'm sorry, I can't count it. Huyan and Murong were directly physical surnames, and Xiao basically died out in the Han Dynasty. Now most of them are Xiao's.