According to Taoism, Gankun Circle is usually played with hands and worn on hands. Save your life and protect yourself. It has the effect of cultivating Inner Dan and helps you settle down.

The Yin-Yang circle of Gankun circle, also known as Yin-Yang circle, is an instrument of Taoism and one of the important religious practices in Taoism. It is two rings connected together, which can be rotated back and forth in the hand, representing the meaning of "yin and yang cycle, cycle after cycle". Usually made of wood or jade. There are also three rings, called "three talents ring" or "three rings for the moon". The old Taoist priest especially likes to play this game, thinking that activities refer to wrists.