Yeah. I believe to a certain extent about the vibrating, I mean isn't the only difference between two elements like gold and lead for example, the frequency they vibrate at? Well, that and the amount of protons, neutrons, and electrons per atom, right? And the "attracting things into your life that are the same frequency you vibrate at" is an interesting concept. Lots of self-help gurus espouse that view, and emphasize the importance, therefore, of always maintaining a positive mindset regardless to what's going on in your life. People do seem to be around positive people.
But I wouldn't say that that whole thing comfirms that hei exists though. I would think you could only be convinced that it existed or not by feeling it in-person from a high-level yogi or hei gong master. Isn't "hei" more like something that can be developed FROM the soul or spirit, than the soul or spirit itself?
I was on the metro earlier, deep in meditation, when a ruffian came over and started causing trouble. He started pushing me with his bag, steadily increasing the force until it became very annoying. When I turned to him, before I could ask him to stop, he immediately started hurling abuse like a scoundrel. I performed a basic chin na - carotid artery strike combination and sent him to sleep. The rest of my journey was very peaceful, and passersby hailed me as a hero - Warrior Man