Of course, advanced mathematics is a more important basic point. Because the foundation is just like the foundation, only if it is solid, the future study will be more stable. However, if the foundation is not solid, the future study will be affected, so the advanced study should pay attention to the foundation. As for the depth, you can gradually deepen it, but you should not be too impatient, because impatience may not be learned. Therefore, it is suggested that advanced learning should be based on basics. Only when the foundation is solid will the knowledge learned in the future be more solid.