Bruce Lee's entrepreneurial work. This movie was the first Bruce Lee directed and acted in, and the martial arts director and action director were also Bruce Lee himself.

Real Kung Fu. This movie belongs to the real fighting style kung fu movie, or fist and feet kung fu movie. Every action is done by the actors themselves, without any stunts or stunt doubles. The main characters in this movie are all real kung fu masters, in addition to Bruce Lee, but also includes the national seven karate champion Luo Lishi, Korean Hapkido seven, Taekwondo six masters Hwang In-sik, and Bruce Lee's disciple Robert Wall. For the first time, Bruce Lee's philosophy of "Jeet Kune Do" is presented directly to the audience in the form of lines. Tang Lung's insights on martial arts: It doesn't matter what school you belong to, you have to be able to use your body without any limitations, and you have to be able to express yourself as much as you can with your body and mind in unison. Of course, the raptor-like screams designed by Bruce Lee himself for the main character's fights are also continued.　　Comedic elements. Bruce Lee successfully added many comedic elements to the main character Tang Lung, so that the audience can feel the tension and excitement of a real fight and at the same time bring relaxation and enjoyment. Later, the Hong Kong kung fu comedy film created by Jackie Chan is this film's comedy elements and real kung fu combined with the form of inheritance and development, so some people think that this film is the Hong Kong kung fu comedy film of the pioneering work. The author's point of view, this film is between the pure kung fu film and kung fu comedy film, directly stimulate the generation of kung fu comedy film, can also be said to be the prototype of Hong Kong kung fu comedy film, can also be said to be of transitional significance of the work.　　Filming Technique. Long shot utilization. When dealing with martial arts scenes, Bruce Lee excelled in the use of long shots, i.e. very few transitions. This is in sharp contrast to the montage (i.e., the combination of multi-angle shooting and transfer shots) in the previous "Brother Tangshan" and "Jingwumen". The long shots enhance the realism of the martial arts action, but the sense of shock is diminished, but the exciting action makes up for this shortcoming.

The fights in the open space behind the restaurant. The two fights feature Chinese kung fu master Tang Lung and foreign hooligans. Bruce Lee's powerful punches and kicks, as well as his long sticks and nunchaku (in the movie, Bruce Lee holds a nunchaku in each hand and knocks down multiple opponents in a storm, which is even more impressive than the nunchaku fighting shown in Jingwumen), leave the audience's jaws on the floor in a state of euphoria.