Hello, landlord! There is no official record yet. Legend says Zhuge Liang, and I prefer to believe this statement. Reference: Kongmingsuo is a traditional intellectual toy in China, which was invented by Zhuge Liang in the Three Kingdoms period. The concave and convex parts (that is, tenon-mortise structure) in this three-dimensional mosaic toy are very clever. There are many Kongmingsuo toys with different shapes and internal structures, which are generally easy to disassemble and difficult to install. Observe carefully, think carefully and analyze its internal structure when assembling. Can you cross six pieces of wood without nails and ropes? More than 2,000 years ago, Kong Ming invented a method of vertically fixing three groups of wooden strips by occlusion, which was widely used in buildings. In the folk, this invention of Kongming was made into a toy-Kongmingsuo. Originally a wooden structure, it looks like a perfect cross cube. You can take it apart with your brain, but it's not so easy to assemble it. Open Kong Mingsuo and reproduce ancient wisdom. Don't let the wealth left by the ancients be lost in our generation. According to legend, Kongmingsuo was a toy invented by Zhu Gekongming in the Three Kingdoms period according to the principle of Eight Diagrams Metaphysics, which was once widely circulated among the people. In recent years, people pay more attention to it. It helps to relax the body and mind, develop the brain and flexible fingers. It is a leisure toy suitable for all ages. Kongmingsuo seems simple, but the mystery inside is endless, and it is difficult to complete the splicing. This is just one of the legends. Another legend is that during the Spring and Autumn Period, Lu's craftsman Lu Ban made a detachable toy out of six pieces of wood to test his son's intelligence and told him to take it apart. After a busy night, his son finally took it apart. This toy was called Luban Lock by later generations. It's actually just a legend. It originated from the tenon-mortise structure pioneered by ancient buildings in China. Therefore, Kong Mingsuo is also called Lu Bansuo, so don't be a sap. Six sons are one and there is nothing to do. (Intellectual property mainly refers to copyright, trademark right, patent right, etc. I hope my answer can solve your problem and help you. Have a happy day!