Shitō-ryū is a combination style, which attempts to unite the diverse roots of karate. On one hand, Shitō-ryū has the physical strength and long powerful stances of Shuri-te derived styles, such as Shorin-ryū and Shotokan (松涛館); on the other hand, Shitō-ryū also has the circular and eight-directional movements, breathing power, and hard and soft characteristics of Naha-te styles such as Uechi-ryū and Gōjū-ryū (剛柔流). Shitō-ryū is extremely fast, but still can be artistic and powerful. In addition, Shitō-ryū formalizes and emphasizes the five rules of defense, developed by Kenwa Mabuni, and known as Uke no go gensoku (受けの五原則), Uke no go genri (受けの五原理), or Uke no go ho (受けの五法):[9]