What are the formulas for slingshot aiming?

Slingshot aiming formula: one reaching, two leaning, three collapsing and four tightening.

First, press your index finger and thumb on the arch of your foot as much as possible. This can achieve good stability, especially for archers who hit the ball horizontally, and can solve the problem of trajectory deviation from left to right.

Second, the upper arch arm should be closely attached to the joint between the index finger and the palm, and the lower arch arm should be firmly attached to the inside of the thumb.

Three collapses mean that the shoulder of the arm holding the bow must sink. Because sinking shoulders can keep the whole arm stable relative to the body, and it will not fluctuate when aiming.

Four tights means that the whole palm of the hand holding the bow should stand upright and tight. If the hand holding the bow is relaxed, there will be great displacement and shaking when launching, which will lead to deviation from the target. Hold the middle finger and ring finger of the bow handle tightly and form a triangular fixed point with the index finger and thumb, so that the slingshot will be stable and there will be no mistakes when launching.