What kind of book is the Lu Ban Jing? Why was it banned by all the dynasties? What is the mystery in it?

The Lu Ban Jing is a specialized book on civil engineering and construction, an ancient Chinese book on building and mechanical engineering, but it tells of many strange Taoist and medical techniques. Lu Ban was a native of the state of Lu during the Spring and Autumn Period, and was an inventor in many fields. He was born into a family of carpenters, and in the course of his observations, he discovered many tools for civil engineering. Not only that, he also made achievements in architecture, medicine, and even Taoism and charms. It became a banned book, mainly because of the emperor's aversion to the art of aversion to victory since ancient times. After the founding of New China, books banning superstition and other books were strictly prohibited.

It is said that the book is divided into three volumes, the first volume is mainly about the construction method of the house, as well as the production and use of construction tools, there is no inappropriate place. The second volume is mainly about Taoism, incantations and so on. The third volume deals with feng shui issues in building houses, etc.

Legend has it that shortly after Lu Ban was newly married, while he was out working, he missed his pregnant wife so much that he cast a spell and rode home on a wooden kite. His wife was very curious, so his wife rode the wooden kite, because his wife flew for the first time and was pregnant, suddenly gave birth to a child on the wooden kite, and the wooden kite was contaminated with blood, immediately the magic disappeared, fell to the ground, and died two lives, and Luban wrote down the curse in his book. What is more reliable is that the Lu Ban Jing was not written by Lu Ban alone, the book summarizes the practical experience of craftsmen in the Spring and Autumn Period from Lu Ban to the Warring States, Qin and Han Dynasties, Wei and Jin Dynasties and North and South Dynasties. It is not just a classic of carpentry, it is a classic of traditional architecture, it is a classic of architectural culture.

There were very few books on architecture in ancient China, and the Lu Ban Jing was generally passed down orally by craftsmen, and the ancient carpenters who had been passing down their craft honored Lu Ban as their ancestor. By the Qing Dynasty, there were numerous new teaching materials of Lu Ban Jing, and during this time, various new and abridged versions were added, and the legend of Lu Ban Jing was started in the Qing Dynasty and spread in the folklore.