The caliber is 2.3cm and the weight is 21.9g. In the , the Manchus used riding and shooting to beat the world. The indispensable finger for archery was popular. Therefore, various materials were used to make the finger. Pull finger originated in ancient hunting activities. It was called Yun in the early days. It has a variety of textures and is more practical for leather materials. Yu Yun is to reflect the identity and status of the wearer.