It is forbidden to fly empty when archery. Why?

It is forbidden to fly in the air because the main function principle of the bow is to store energy on the bow piece through backward flexion. In general, energy is transmitted to the tail of an arrow through the bowstring, and then the whole arrow is pushed out. But what if there are no arrows? Congratulations, the bowstring will work until it hits your wrist (too short will also hit your wrist). My bow is 34 pounds of competitive recurve bow. If I hit my arm, it will be blue for two days. Do you think it's 40 kg or 45 kg? In this process, the energy released by the bow will oscillate to produce great power (I don't know how to describe this). Therefore, when this force exceeds the allowable limit of the bow, the bow will be skewed, broken and split. Besides, the sound in the air is really terrible. A teammate of BUCs' school team once played in the air. This voice will never be forgotten. A layer of glass fiber on the surface of the bow piece cracked directly, and the wooden part inside also cracked. Bow piece scrapped, tears streaming down her face. Of course, in addition to empty pull and empty release, using arrows that are too light or too weak will have the same effect (with gorgeous fishbone).