Bu Chae Sool is a set of ten strikes to pressure points using the fan, taught at the 3rd dahn level. The fan was one of the favorite weapons of the Korean Nobility, especially in the Royal Court, where "conventional" weapons were banned. An elegant, and deceptive weapon, the fan reached its height of popularity during the Three Kingdoms Period. Small, and lightweight, the fan could be used in all situations, either in the fingertips or concealed in the loose, flowing undergarments of Korean Noble class.