Distinguish the blood inheritance relationship of a certain branch of the family.
Tangkou, formally known as "tanghao", is established by the ancestors of a certain clan in the clan and is used to distinguish it from other clans. The names of the halls are mostly derived from the deeds or stories of a famous person in their ancestors.
Family tree: also known as genealogy, genealogy, etc. It is a book that records a family's lineage and the deeds of important figures in the form of a genealogy. The emperor's genealogy is called a jade certificate, such as the New Dynasty Jade Certificate and the Imperial Song Dynasty Jade Certificate. It focuses on recording the paternal family lineage and characters, and evolved from the chronicles of emperors, biographies of princes, and chronology in official history.
A family tree is a special kind of document. In terms of its content, it is a document with civilian characteristics in the five thousand years of Chinese civilization. It records the people and deeds of the blood group of the same ancestors. Historical records of the situation. Genealogy is a precious humanistic material, which has its unique and irreplaceable function for in-depth research on history, folklore, demography, sociology and economics.