进一退二倍投公式

简介：Riding a hoverboard and flying all the way, Qin Fen unknowingly arrived at the Cultivation Island. This is a relatively large floating island with rows of training halls, most of which are run by teachers or senior students. , in fact, it is similar to a gym. You can enter and study after paying a certain amount of points, and there will be a coach to guide you in your practice.