Albert Einstein: Everything is energy that's all there is to it. Match the frequency of the reality you want you cannot help but get that reality. It can be no other way. This is not philosophy. This is physics.
One way to understand Qigong is that it is the basics or foundation of T'ai Chi. This is how I learned from the very beginning: grounded myself first in a Qigong form, then gradually learned the more sophisticated principles and practices of T'ai Chi.