Dim hsueh & hung sha dzung, are they real?

I born Japan, study several karate dojo. My lover Kyojin know Japan, China, Korea, Tibet martial arts. I tell him I hear China man touch Japan man on hand make him vomit, have diarrhea weeks later. Kyojin say intestine have chi meridian on hand joint of thumb-forefinger, Chinese use dim hsueh on it. Also hear Chinese not touch, just point hand at inside man's knee, cause liver illness. Kyojin show me dummy and drawings use in acupuncture, acupressure, moxibustuiin, show liver chi p on inside knee. Kyojin say man use hung sha dzung this time. He say he study them, not know if they real or not. He have some books. I not read much Chinese. Kanji copy Chinese writing, verbs different, we use Katakana-Hiragana phonetics. One seem say touch foot right time make man die in 2 years. I not believe all this. You think one make man sick or die just with touch or not touch, just point hand at him? Kyojin say some men say Bruce Lee killed by dim hsueh or hung sha dzung.