slide 1 2, the right hand on the ring finger is pushed from right to left by the edge of the hole, and it comes out. Slide bass 6 left index finger is placed on the edge of the through hole, and at the same time there is a slip. After the bass 6 falls 16, the index finger and middle finger slide to the right and rise. Of course, pay attention to the atmosphere of cooperation. Of course, it's not a good start, and practice hard can blow round and slide!