Okinawan Ryukyu Karate - is a system of martial arts that has roots in both the Okinawan "TE" (HAND) system and the Chinese Kempo (FIST WAY).  Thus RyuKyu Kempo is a blend of the old Okinawan and Chinese martial arts.  Some examples are:

Tuite Jitsu (grab hand) will show that everyone is weak in the same way, all of us have nerves, tendons, joints, and muscles that will respond in a predetermined manner when specific pressure is applied to them.   

Kyusho Jitsu (nerve point manipulation) This is the most advanced form of strikes in the martial arts. When properly used against selected anatomical points of the nervous or circulatory systems it will temporarily disable the attacker beyond the ability to renew his attack.

Here precision not strength is the key to the resolution of a threatening situation.