How to quickly stack T-shirts?

 1. Lay the T-shirts flat on the table or cabinet, and flatten the T-shirt.

2. Visually inspect the horizontal mid-line of the T-shirt. It doesn't need to be so accurate. Visually inspect it probably belongs to the mid-line.

3. Visually find the midpoint of the left shoulder, also visually find a rough midpoint, and find a line down from the midpoint, which is perpendicular to the horizontal mid-line.

4. Pinch the intersection point A of the two lines with your left hand, pinch the midpoint B of your shoulder with your right hand, then pinch the midpoint of your shoulder with your right hand (B), pull up the T-shirt, keep your left hand still, turn your right hand over your left hand, and turn B Point coincides with point C on the bottom of the T-shirt.

5. Pinch the intersection point A with your left hand, pinch the coincident point BC with your right hand, lift the T-shirt, shake it gently, and then lay it flat on the table. Remember, both hands are still not relaxed

6. Fold down the other shoulder exposed on the table. The T-shirt is folded like this. With a little practice, after the movement is consistent, it only takes three seconds to fold a T-shirt.