Luban invented the airplane with fewer story words.

Tell me about Luban's invention-airplane. Luban is a carpenter, and he is skilled at chopping wood with an axe, but it is still difficult to cut wood smoothly with an axe. To this end, Lu Ban made another fine axe, which was sharpened quickly. Much better than before, but still not ideal.

On one occasion, Lu Ban was inspired when he saw a farmer raking the ground flat. After returning home, he made a flat-edged knife with a piece of iron on it. This time, Lu Ban didn't cut it. He pushed it onto the wood with this knife. Push, the wood is pushed down with a thin layer of sawdust. After a dozen pushes, the surface of the wood is flat and smooth, which is much better than using an axe in the past. But when this thing is pushed in your hand, it is stuck and ineffective. Lu Ban made a wooden pedestal with a narrow knife in it. So the plane was born. When planing wood, people call it "Mrs. Ban". It is said that this is because in the past, when Luban planed wood, his wife held the wood. Later, when he invented the bayonet, he didn't need his wife's help.