Qin Na is the art of seizing, controlling and immobilizing the opponent. The application of these techniques are divided into four major categories.
"Fen Jin" or "Zhua Jin" which stretch apart an opponent's muscles or tendons.
"Cuo Gu" which twist or push bones in painful positions and is generally applied to the joints.
"Bi Qi" the technique of preventing the opponent from inhaling. This differs from mere strangulation in that it may be applied to muscles surrounding the lungs, to shock the system into contractions which impairs breathing.
"Dian Mai" or "Dian Xue" which apply pressure or strikes to the blood vessels and "Qi" points.
Shaolin Qin Na's is uniqueness is that it is entirely defensive, the adversary is not attacked once under control. It is an effective and efficient means of self-defense for women.
Thérèse Bonte, a professional cartoonist (http://blog.therese-bonte-illustrative.fr/) humorously describes classes of QinNa.