Sanchin
Sanchin (三戦) is a kata of apparent Southern Chinese (Fujianese) origin that is considered to be the core of several styles, the most well-known being the Okinawan Karate styles of Uechi-Ryū and Gōjū-Ryū, as well as the Chinese martial arts of Fujian White Crane, Five Ancestors, Pangai-noon and the Tiger-Crane Combination style associated with Ang Lian-Huat. Tam Hon taught a style that was called simply "Saam Jin" (Cantonese for "Sanchin").
The name Sanchin, meaning "three battles/conflicts/wars" is usually interpreted as the battle to unify the mind, body, and spirit; however, there are other interpretations.
Uechi-Ryū practices a form of Sanchin with nukite zuki (貫手突) "open spear hand" strikes, while the version used by many other styles such as Gōjū-Ryū and Chitō-ryū use a closed fist.
Titled Uechi-ryu, but the commentary states Pangai-Noon. These two styles are intimately linked.