Xing Yi Quan is described as one of four most famous kenpos in China, along with Shaolin Quan, T'aichi Chuan, and Baguazhang, as Ma Kensei has decribed. It is different from the spiral movement of Tai Chi or the round movement of Ba Gua. Those users of Xing Yi Quan focus in using the straight movement of the fist to give out strong blows, which makes it more harmful compared to Tai Chi or Ba Gua. There is a saying that the straight movement of Xing Yi Quan is learned from "jar", which is the stab stance of the Chinese lance. That makes Xing Yi Quan more lethal in crowded places, where the opponent cannot avoid the direct strike which is the specialty of Xing Yi Quan.
Although not describe much in the series, Xing Yi Quan can be classified to "Five stances and twelve forms". The former represents five elements of china and the latter were taken from twelve different kinds of animals.
- Shin Yi Ken's Straight Rush: Yo charges at his opponent in a straight line and hits them with a powerful punch.
- Banbu Beng Quan: First, the user crosses their hands and raising their front leg. Then, they take a quick step forward towards their opponent and deliver the punch.
- Kongzhong Beng Quan: This technique is similar to flicking one's fingers except the user does this with both of their hands. It is used when the user doesn't have any footing and is in the air.