2. Pick up another vertical column and form the shape as shown in the figure with two other horizontal columns.
3. If there is no problem, continue to put two long columns on the left and right sides respectively.
4. Just rotate it 90 degrees and insert the last long column, which can meet the requirements.
Lubansuo, also known as Kongmingsuo and Bagua Suo. According to legend, during the Spring and Autumn Period, Lu Ban, a craftsman of the State of Lu, made a toy that could be disassembled with six pieces of wood in order to test whether his son was clever or not, and asked his son to disassemble it. After a busy night, his son finally took it apart. This kind of toy was later called Luban Lock. In fact, this is just a legend. Lubansuo, also known as Kongmingsuo, Besapu, Liuzilian Boat, Mocher Pus, Nanmu, etc. , originated from the tenon-mortise structure pioneered by ancient architecture in China.