It's not that practicing vajrayana kungfu is supernatural. Practicing the Eight Vajrayana Kung Fu can really link the effects of human fatigue, but it will not be supernatural. It is a rumor that there are supernatural phenomena. To believe in science, the Eight King Kong Kung Fu is a combination of the theory of "Yin-Yang and Five Elements" in traditional Chinese medicine. Through eight sets of movements, we use the strong inner strength to dredge the whole body meridians and make the connection of body, bones and joints smooth. This answer is for reference only. Don't be blindly superstitious.