Chinese Martial art Chese martial art is divided into two types: inner style and outer style. The outer style martial art has longer history than the inner one. Many people think Shaolin boxing is a representative of outer martial art, and Tai Chi represents inner martial art. The significant difference between inner martial art and out martial art is how to practice with muscles, in particular, the outer martial art practitioner may have strong muscles in their body and they will have a good figure, while the inner martial art practitioner does not have strong muscles. In my opinion the inner martial art is more difficult to master, as the practice thereof combines concentration of attention and Chinese traditional medicine. There are millions of Tai Chi practitioners all over the world, but few can get the essential of Tai Chi. P.s. why it is Tai Chi, the original Chinese word is Taiji.