During the Spring and Autumn Period and the Warring States Period, there was an inventor named Lu Ban in China. For more than 2,000 years, his name and stories about him have been circulated among the people, and carpenters in later generations have honored him as the founder.

Lu Ban was born around 507 BC, whose real name is Gong Bo. Because "Xiang" and "Ban" are homophonic, he was a native of Lu in the Spring and Autumn Period and the Warring States Period, so he was called Lu Ban. He is mainly engaged in carpentry. At that time, people had no good way to make trees into smooth boards. Luban observed carefully in practice, imitated biological forms, and invented many woodworking tools, such as saws and planers. How did Lu Ban invent the saw?

Legend has it that once he went into a deep mountain to cut down a tree, he accidentally slipped, and his hand was cut by the leaves of a wild grass, oozing blood. He picked the leaves and touched them gently. It turns out that there are sharp teeth on both sides of the leaf. He gently stroked the back of his hand with these small teeth, and even cut a hole. His hand was cut by these little teeth. He also saw a big locust on a piece of wild grass, and many small teeth were arranged on two big dies, which could quickly grind the leaves. These two things inspired Lu Ban. He thought, if there is such a toothed tool, wouldn't it be able to cut trees quickly! So, after many experiments, he finally invented a sharp saw, which greatly improved the work efficiency.

Lu Ban named this newly invented tool "Saw". This is the origin of the saw and the story of Lu Ban's invention of the saw!