You have to jump a few times, and press it when the light spot is in the middle. Here, different songs have different P positions. Generally speaking, the light spot is P in the middle of the bright spot, but most of the bright spots above seven stars are P in the back. So, if you don't press P in the middle, you can move back without worrying about missing it. The main thing is that you have to be familiar with the music rhythm, don't be disturbed by the bright spots on the screen, and press the space when you are stressed, so that you can P.