Genealogy There are many kinds of genealogies of Li surname, and the number is amazing. It is said that Utah Genealogy Society has 1 15 species, Beijing Library has 67 species, and there are countless folk preservers. From the time point of view, Li's genealogy began in the Song Dynasty and flourished in the Ming and Qing Dynasties. Some of them were modern, basically privately revised, and there were versions such as initial revision, continuation revision and restoration revision. The main purpose of compiling genealogy is to "respect ancestors and gather clans" and educate clan members on the ethics of "respecting ancestors and dating each other", that is, to respect ancestors, strengthen clan unity, and clarify how to treat people and things. The main content of genealogy is to record Li's lineage (that is, the lineage handed down from generation to generation) and the deeds of important people. Generally, it is arranged in order before articles and examples, followed by ancestral hall, ancestors, generations, family rules and family instructions. The preface introduces the origin, branch ancestor and the purpose of compiling music of Li surname. In the second year of Jingyou in the Northern Song Dynasty (1035), Wang Zeng and Ouyang Xiu prefaced the Genealogy of Li, saying: "Li Shupo, a Dali, who took refuge in Chang 'an, refers to Li Wei's family ..." "The first great scholar was born in Li Jinling ... I was born in Longxigong, Tanggong and Linhuai Wang Guangbi. Since then, after a period of separation and migration, schools in Jinling, Guiling, Xishu, Chang 'an, Changsha, Hongzhou, Ji 'an, Fuzhou, Fujian, Guangdong, Yunnan and Jinling are really ... famous for their lineages, so the way to teach love should be different. "Ordinary Examples explains the style and scope of this music score. For example, Wen Chuan (now Liancheng County, Fujian Province) recorded in "Li's Seven Chapters": "The genealogy of the Ming Dynasty is horizontal, so each generation has one layer, the article name or one son to several sons, and then down to the fifth generation, then to the sixth generation, and then to the tenth generation, all according to this formula." "Horizontal calligraphy begins with the title of the book, and the fine words on the side are divided into several volumes. The second volume, the book number and the book resume, the year of birth and death, the surname, or the surname, are buried together"; "Where the shop name, line matching, birth and death, burial place, year and month, the examination is actually a book, and there is no examination"; "Whoever has a clean and elegant family in the past dynasties will pass on the merits of his title in detail. If he has not been an official, he has learned to act, which can be used as a method for the world or as a fact "; "Women have good deeds, and austerities are also books." Ancestral temples and ancestors are described in words with pictures. Li's surnames are arranged in an orderly way and his words are exquisite. In order to facilitate memory, most of them are compiled into poems and couplets. For example, the generation of Li Jinmai School in Qing Daoguang Li Family Tree is: "Standing proudly, inheriting from generation to generation; When the world is dry, Kuntai and Wen Zi should be prosperous "; In the Li Family Tree in Longxi County, Guangxu County, Qing Dynasty, the class (class sequence) of liguan Maipai is like this: "Shao Zulong is the first family; Bachelor's degree first, full of glory "; "Taian Zongru celebrates (in), and Yang (in) the enlightenment of the family; Show the glory of the world, worship tin and take incense "; Guangzong thinks that he has a long history from generation to generation; I owe it to the mayor. "These poems, couplets, and every word separated in order are the words passed down from generation to generation.