Let's theoretically suppose one was out finding medicine in the woods, when all of a sudden a beautiful woman appears out of nowhere and acts all distressed. One was stupid enough to give it the benefit of the doubt and engage in conversation but could barely stand listening to a word of it's false and wicked display of trickery. With word tricks and reversed meanings it tried to attach to this person and somehow managed to do so, which means this person now has a lump of turbid yin qi from this demonic encounter stuck beneath the heart, which wasn't there before. It feels very real and twists and move when doing certain Qigong exercises like Yang Organ Tonifications especially.
What would one do in such case to dispel this evil energy that has somehow lotched itself into the system?
This person has tried several meditations to no avail.
You make a potent observation here.
The basic form of perception is hallucination. All that we perceive is being recognized now as not direct observation, but interpretive hallucination.
All human perception is an aproximation, not a direct experience.
Our senses are triggered by signals and we interpret those signals into our perception of reality.
We do not see/hear reality as it is... we transduce our aproximations of reality from signals through the conditioning of our perceptual process.
Generally it seem when someone's confessed interpretations of the signals of life do not jive harmoniously with their native culture, (particularly when it makes the majority nervous or frightened), we seperate them and isolate them and treat them, to make ourselves feel better.