Kūsankū

Kusanku (クーサンクー) or Kung Hsiang Chun (公相君) was a Chinese martial artist who is said to have visited Okinawa during the Ryukyu Kingdom in the mid-18th century. He performed a martial art called quan-fa (拳法) in Ryukyu, which is believed to have contributed to the later development of kempo, and then later karate.