Kong Mingsuo is said to be a toy invented by Zhuge Kongming based on the principles of Bagua metaphysics during the Three Kingdoms period. It has been widely circulated among the people. In recent years, it has gradually gained people's attention. It is good for relaxing the body and mind, developing the brain, and flexing the fingers. It is a leisure toy suitable for all ages. Kong Mingsuo looks simple, but in fact it contains endless mysteries, and it is difficult to complete the assembly without knowing the key points. It is a leisure toy suitable for all ages. This is just one of the legends. Another legend is: It is said that in the Spring and Autumn Period, Lu Ban, a craftsman from the State of Lu, in order to test whether his son was smart, made a toy that could be assembled and disassembled out of 6 wooden strips and asked his son to take it apart. My son worked hard all night and finally took it apart. Later generations of this kind of toy was called Luban Lock. In fact, this is just a legend. It originated from the mortise and tenon structure pioneered in ancient Chinese architecture. Therefore, Kong Mingsuo is also known as Luban Suo, Bie Sap, Liuzi Lianfang, Monaihe, Nanrenmu, etc.