Generic Qigong, in my opinion, can be very dangerous. If you do not have a purpose for your practice, then what are you doing? Maybe you'll get lucky and strike gold but odds are not in your favor.
As a Healer in SFQ you are helping a person Heal Themselves.
All Qigong is based on the same set of Principles, axioms, self evident truths, the same as any body of science or art. It is the persons interpretation of these same principles that we see the difference in how they are applied and the results that are attained.
"Spring Forest" does have meaning and Master Lin goes into that in his materials.
To concentrate on oneself in Qigong is only a beginning step.
Quality depends on how you apply what you learn. That is a self regulating thing.
Please enjoy whatever path you follow.
Jeff