2. The book "Ruban" that we are exposed to now is actually the first book, not the second book, because the second book of this book is to teach others how to harm others. Of course, some people save lives, but most of them are harmful. In fact, there is a little story about this matter. At that time, Lu Ban was ordered to go to Beijing to build a palace, but at this time his wife was pregnant, and Lu Ban missed her very much, so he privately made a big piece of wood similar to a paper kite.
This can solve the problem of lovesickness, but this wife of Luban is a very curious person, so she silently wrote down Luban's mantra. Once, when Lu Ban came back from a nap, she climbed up the wooden bird and said a spell. The big bird really flew into the air, and then Luban's wife sat in the sky. At this time, Luban's wife was pregnant, but unfortunately she passed the wooden bird.
4. Because the wooden bird was polluted, it lost the blessing of the spell and then fell from the sky. Finally, both mother and son died. Lu Ban was very regretful when he learned about it, so he put a curse on the book. People who study this book have to choose between "widowhood, widowhood, loneliness and disability", so Lu Ban's book is also called "losing a course"