Luban (507 BC-444 BC), surnamed Ji, is a famous class. He was called Gong Bo, Gong Bo and Bo Ban, and was honored as Gong Bo Zi. Also known as Luban or Lu, it is used to be called "Luban". Lu, now Tengzhou, Shandong. Born in the 13th year of Zhou (507 BC) and died in the 25th year of Zhou Pingzhen (444 BC), he was an outstanding inventor in ancient China. His name and story have been circulated among the broad masses of the people for more than two thousand years. Chinese folk craftsmen all respect him as the founder. It is recorded in many ancient books, such as The Pearl, The Origin of Everything, and A Textual Research on Ancient History. He thinks that many tools and appliances used by carpenters were created by him, such as square (also called Lu Banchi), and the legends of tools such as Mo Dou, planer, drill and saw were also invented by Lu Ban. The invention of these woodworking tools liberated the craftsmen at that time from the original heavy labor, and the labor efficiency was doubled, and the civil technology was completely new. Later, in memory of this famous master, people regarded him as the ancestor of China folk craftsmen.