Scholars in past dynasties have different opinions on genealogy. Zheng Xuan, a scholar in the Eastern Han Dynasty, said: "The genealogy belongs to the family. If the network is in the outline, the outline must have thousands of eyes and the genealogy must have thousands of branches." Fang Xiaoru, a scholar in the Ming Dynasty, said: "Genealogy, in general, contains the distance, names, taboos and year numbers of ancestors;" Genealogy, cloth clothing, cloth clothing far and near, eternal commandments, sectarian origins from generation to generation. " Zhang Xuecheng, a famous archivist in Qing Dynasty, said: "Genealogy is also the history of a family." The preface to Hong Xiuquan's "Hong Family Tree" said: "The genealogy is also good, so it is compiled from generation to generation." Today, Mr. Yang Dongquan wrote in China Genealogy. As long as the descendants of the same ancestor are listed one by one, a simple genealogy is formed. "It can be seen that genealogy is a file that records the lineage and deeds of the main members of a clan. It records the history of the clan in a certain form, and its form and content focus on archival science, history and cultural anthropology.