Tao Te Ching is a philosophical work of Laozi (Li Er) in the Spring and Autumn Period, also known as the moral truth, with five thousand words and five thousand articles by Laozi. It was a work of China before the separation of the pre-Qin philosophers in ancient times. It was highly praised by the philosophers at that time and was an important source of Taoist philosophy. Tao Te Ching is divided into two parts. The first part of the original text is the Tao Te Ching, and the second part is the Tao Te Ching, without chapters. Later, it was changed to the Tao Te Ching in the first 37 chapters, and the Tao Te Ching in the last 38 chapters, divided into 8 1 chapters.

The Tao Te Ching takes the philosophical meaning of "virtue" as the main line, and discusses the ways of self-cultivation, governing the country, using troops and keeping in good health, mostly for the purpose of politics. It is the so-called "inner sage and outer king" theory, which has profound meaning and wide tolerance and is known as the king of all classics.

Tao Te Ching is one of the greatest works in the history of China, which has a profound influence on traditional philosophy, science, politics and religion. According to the statistics of UNESCO, the Tao Te Ching is the most widely translated and published cultural masterpiece except the Bible.