Because the waist suction in the back is turned from the back shoulder to the back of the shoulder. Generally, only 1/3 of the pfer is right, that is, 1.3 to 1.5 centimeters.

If the middle of the waist is large, it means the amount of shift from shoulder to shoulder is large, so the amount of float in the middle of the back line will be large.

If it is a hunchback shape, it can be treated this way.

The size of a province is determined by human beings, clothing, money and fabrics.