Kūshankū (クーシャンク, 公相君) also called Kūsankū (クーサンクー) or Kankū-dai (観空大), is an open hand karate kata that is studied by many practitioners of Okinawan Karate, specifically styles related to Shuri-te. In many styles, such as Shotokan, there are two versions of the kata: Kūsankū-shō and Kūsankū-dai. The name Kūsankū or Kōsōkun (公相君) is used in Okinawan systems of karate, and refers to Kūsankū, a Chinese diplomat from Fukien who traveled to Okinawa in the 1700s. In Japanese systems of karate, the kata has been known as Kankū (translated as gazing heavenward, viewing the sky, or contemplating the sky) ever since it was renamed in the 1930s by Funakoshi Gichin.
Kūsankū is a cornerstone of many styles of karate. It is characterized by the use of flowing techniques that resemble those found in White Crane Kung Fu; it also has a wide variety of open-handed techniques.https://en.wikipedia.org/wiki/K%C5%ABsank%C5%AB_(kata)