Can't say I've tried this, but sounds interesting
means "seeing the light". This method has nothing to do with visualization as you can actually see the qi and some acupuncture points.
In that case as I have said many times before qi can be seen by learning 看光法. There are lots of new age books about seeing auras that also cover some similar exercises. At first you'll see a tiny faint light but by practice especially after opening up the zhoutian you will be able to see it more clearly and also you will be able to see different layers of aura. At that point you will notice that the magnetic feeling that you might sense between your hands and other parts actually happens when the border of those layers touch each other.
If you want to learn about how other people experience qi in a way that is not explainable by current science then you need to keep an open mind. I assume that a lot of the concepts in new agism come from traditional spiritual systems (though the way they talk about them seems flashy) and if you have a preconception that everything they experience and talk about is junk then I don't know why you would want to know about them.