Brief introduction of textual research on bamboo slips and silk books in the Warring States, Qin and Han Dynasties: The study of bamboo slips and bamboo slips in ancient China is now generally called the study of bamboo slips and bamboo slips. If silk books are included, it is also called the study of bamboo slips, which has become an international discipline. Generally speaking, the study of bamboo slips and silks can be divided into two branches: one is the study of bamboo slips and silks mainly found in northwest China, such as Dunhuang bamboo slips and Juyan bamboo slips; One is the study of bamboo slips and silk books mainly unearthed in the mainland, such as Mawangdui silk books and Guodian bamboo slips. Professor Liu Lexian's work focuses on the latter, especially on the study of mathematics books in the Warring States, Qin and Han Dynasties, and has made outstanding contributions. Professor Liu Lexian published 1994 Study on Japanese Bamboo Slips in Sleeping Tiger Land in 2003, Bamboo Slips and the Origin of Digital Documents in 2004, and Mawangdui Tian Wen Kao in 2004. His exploration is based on the evolution and development of numerology in China in the past dynasties, referring to a large number of ancient numerology books rarely visited by scholars in the past, and making a comparative study, so that many puzzling points in this kind of bamboo slips and silks have been melted and their creative achievements have been recognized by scholars.