Gou Is a Mentor in the Strange Magic Way

Is this how the Soul Refining Banner is used? Change! Everything has been transformed into a grand and resplendent place. Put another magic array inside, it will be as comfortable as you like. When you come, you will receive seven days of free trial, and you can come and go freely. If you invite a fellow student, you will receive another seven days of free trial, with no limit. What? Where do you think the soul comes from? People have entered your soul refining flag, when to retrieve the soul does not depend on your mood!