First, there was no such thing as qigong in ancient times. Before the word qigong appeared, there were breathing, induction and internal work.

Second, the standard writing of Qigong is "Gong" instead of Qigong.

Third, practice is not called practice, but practice. Skills are divided into health skills and offensive skills.

Fourth, the practice of practicing calligraphy must have stronger willpower than fitness and ascetic monks.

Fifth, since ancient times, it is very remarkable to knock down the enemy within a distance of one or two meters.

Sixth, to sum up, if the energy is large enough and the impact force is strong enough, the bullet attack can be stopped theoretically.

Sixth, but according to human weakness, even if there is such internal skill, I'm afraid no one can practice it.