Wu Su, or Wu-Shu, is the true name for Chinese martial arts, which are usually regrouped under the name "Kung Fu" (or Gong Fu). Kung Fu, however, merely means skill through effort , and may represent anything regardless of martial qualities.

Alternate names for Wu Su are Wu Kung and Kuo Shu

Wu Su is also the name of an martial style practiced in the People's Republic of China (and, I hear, spreading around the world). True practitioners of Wu Shu tend to see PRC Wu Shu more as a performance art, because, while it certainly has its root in older traditions, it tends to favor flashy stuff over useful stuff, and emphasize quick advancement to attract the masses.