Yin-hand cudgel is one of the most typical cudgel among all the Shaolin cudgels. There are notable differences compared with othe shaolin cudgels. Yin means this set is practised in reverse movements, not practised according to mormal logic. It makes a feint to one direction, but it will actually attack you in another side. You can seldom guess what is the next movement. so it is difficult to defence.