Seiunchin (kanji: 制引戦; katakana: セイユンチン (attack, conquer, suppress; also referred to as "to control and pull into battle") is a Kaishu Kata of the Goju-ryu style of karate-do. It was taught by Goju-ryu's founder, Master Chojun Miyagi. Seiunchin is thought to mean "Marching Far Quietly."
"Seiunchin's origin lies in the internal system of Wu-shu, Hsing-I. Seiunchin's direct translation through time has been lost, but many Goju-ryu Karateka refer to it as Marching far Quietly. Seiunchin is a unique kata because only hand techniques are used. An advanced kata, Seiunchin works a lot on the shiko dachi and incorporates strike such as the back fist and elbow. Along with Sesan, Seiunchin is the other training Kaishu of Meibukan Goju-ryu, which is best suited for a smaller man with less physical power. Many times in the kata techniques are performed with the other hand used as re-enforcement!" - From 'Origin and Characteristics of Goju-ryu Kaishu Kata'