For example, Lu Ban invented the airplane.

Luban is a carpenter and works with wood all day. He is very skilled, especially good at cutting wood into the required shape with an axe. However, it is impossible for Lu Ban to cut the wood flat with an axe.

Especially when it comes to wood with coarse grain and many scars, it is even more difficult. In order to solve this problem, Lu Ban pondered during the day and thought at night. First, he made a thin axe, which was quickly sharpened. Much better than before, but still not ideal.

So, Luban ground a small and thin axe, covered with a piece of iron, leaving only a narrow blade. This time, Luban won't cut it. He pushed the wood with this narrow blade. Push, the wood pushed down a thin layer of sawdust.

After a dozen pushes, the surface of the wood is flat and smooth, which is much better than that cut with an axe in the past. But when this thing is pushed in your hand, it is both stuck and invalid. Lu Ban made another wooden pedestal and put it in. So the plane was born.

Brief introduction of planer:

Plane, a Chinese word, pinyin is bào zi, which is a woodworking tool used for planing, thinning, polishing and making plane objects. Judging from the excavated cultural relics, China had an airplane at the latest in the Song and Yuan Dynasties. The application of planer makes furniture advance by leaps and bounds. Hardwood furniture in China developed rapidly in the late Ming Dynasty, which soon affected the court.

No nation in the world uses this hardwood to make furniture, which is the unique value of China people. Our hardwood sinks when it enters the water, with a large proportion, very good texture and dark luster like rosewood.