Tao Te Ching, the philosophical work of Lao Tzu (Li Er) in the Spring and Autumn Period, also known as "The True Scriptures of Taoism", "Lao Tzu", "Five Thousand Words", and "Five Thousand Words of Lao Tzu". This work is an important source of Taoist philosophy. The Tao Te Ching is divided into two chapters, the first part of the original "De Jing" and the second "Dao Jing", without chapters, later changed to "Dao Jing" 37 chapters before, after chapter 38 "De Jing", and divided For Chapter 81.