What is the significance of "three hands and one pool" in Wing Chun's small thought? What's the use?

This action is also called three worships to Buddha.

Meaning:

Mainly used to practice wrist strength, body structure, maintain a sense of use, slowly relax the technique, and cooperate with breathing, with great emphasis on elbow centering.

Function:

It has a strong protective effect on the midline of the body.

This action is a combination of attack and defense.