Secrets of Gun-fu: the answers of the Vietnamese master Nguyen hong Tu to 100 questions regarding some physical, metaphysical and spiritual aspects of one of the eastern martial arts. Various styles of oriental martial arts are so popular that it makes no sense to represent them. Karate, wushu, taekwondo and their "brethren," having penetrated into all corners of the civilized world, took possession of the minds and hearts of millions of people. The proposed book contains a story about one of the types of martial arts. His traditions are based on the teachings of Buddha and Confucius, absorbed knowledge of philosophy and medicine, astronomy and physiology. The book is built in the form of a conversation between a student and a master, in the answers of which the reader will learn a lot of interesting things for himself.