The content of Lu Ban's book is complex. It records many so-called magic and Taoist techniques to save and harm people. Not only because these heretical practices may have adverse effects on learners and others, but also because of the dominance of the rule of law. The author was worried that his political power would be threatened, so he banned the book.
Why is Lu Ban Shu a banned book?
The first volume of Lu Ban Shu mainly describes the construction rules and techniques of carpentry, stonemasonry, and masonry, while the second volume mainly describes the Taoist techniques such as medicine, Feng Shui, and witchcraft. Experience formulas involve many industries in ancient lower society.
In ancient times, rulers believed that if everyone learned the fantasy magic in Lu Ban's book and relied on mysterious Taoism to mobilize the people of the world to rebel, it would be detrimental to their own rule and management, so they listed Lu Ban's book as For banned books.
The Book of Lu Ban is said to be written by the sage Lu Ban. It is a strange book about civil engineering. In addition to recording medical spells, the second volume does not specify clear practice methods for other spells. Only incantations and symbol.