山西形意拳

Xing Yi Quan features aggressive shocking attacks and direct footwork. Most of the training and footwork are practiced on straight lines. The linear nature of the art hints at both the military origins and the influence of spear technique alluded to in its mythology. The goal of the Xing Yi exponent is to reach the opponent quickly and drive power through them in a single burst. The analogy with spear fighting is useful here. This is achieved by coordinating one's body as a single unit, and the intense focusing of one's Intent (Yi 意) and coordinated power (Jin 勁) utilizing tight circles (usually in a forward direction). Issuing explosive power in Xing Yi is referred to as 'Fa Jin' (發勁).
Schools of the Shanxi branch have a narrower stance, lighter footwork and tend to be more evasive. They emphasize the development of relaxation before the practice of intention (Yi).