What is a bow?

A: The piece of wood tied to the bow arm is the bow handle. This thing has an upper bow arm and a lower bow arm.

The main function of this thing is to correct the bending degree of the bow arm when the bow needs to be arched after the bow is completed and when the bow is lowered in peacetime, so that the upper and lower bow arms can maintain a certain symmetry when deformed, and at the same time prevent the deflection of the two bow tips.