How was the saw invented?

The saw was invented by Lu Ban, and it is said that the saw was also invented by Lu Ban. However, as early as the Neolithic Age, people living in China would process and use toothed stone sickles and clam sickles, which were the embryonic form of saws. The story of the invention is like this: It is said that once when he went into a deep mountain to cut down a tree, he accidentally slipped and his hand was cut by a leaf of a wild grass, oozing blood.

He picked the leaf and touched it gently. It turns out that there are sharp teeth on both sides of the leaf. He scratched the back of the hand with these small teeth, and actually scratched a hole. His hand was cut by these small teeth, and Lu Ban was inspired by this incident.

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.