Yang Tai Yoshikawa has a unique skill, that is, birds don't fly. It is said that Yang Luchan can put a swallow in his hand, but the swallow can't fly out of his palm. Later generations have different views on this story. Supporters believe that if a bird wants to fly, it must push its feet down before it can borrow power. A master can sink his arms and unload his strength. Opponents believe that this is a self-talk of Tai Chi Chuan and a scam.

So is there any mechanical principle in the process of birds not flying? Many of us have played the passing table tennis relay. In this kind of competition, table tennis must always be kept on the racket, and you can't give up halfway. Imagine that if the racket stays still, the ball will definitely fall, which is very simple, because the ball will roll on the plane. But if table tennis can keep its balance through the racket movement, the ball will roll to the right and the ball will roll to the left. At the same time, we should pay attention to the coordination of hands, eyes and feet. After a period of practice, people can keep table tennis on the racket without falling off, and some people can easily carry the ball when running.

At this point, you can think about it. Isn't the reason the same as the bird in Tai Chi doesn't fly? It is also possible for Taiji Chuan to say that "a dime can't be added and flies can't fall" after understanding this truth and reaching such a state through practice.