Practicing Evil Skills By Mistake, The Law Of Heaven And Earth

This is a bizarre and mysterious world, where the world is filled with all kinds of evil cultivation methods. Once a person practices, his appearance and temperament will change, he will become possessed by demons and become insane, and in severe cases, he will become a big medicine for the evil spirits to feed on...
Duan Yun traveled through time and accidentally got a big medicine method "The True Solution to the Jade Sword".
I didn’t expect that he was a unique spiritual genius. Without knowing it, he transformed this skill. The jade sword pointed the way and penetrated everything.
Later, he learned more and more exercises. With the concept of "the master can help the world", Duan Yun never kept secrets and spread his martial arts to the world.
Who would have thought...
"Duan Duan mistook me! He told me that this Kung Fu nourishes yin and strengthens yang, but now I can only squat and pee, wuwu..."
"This book "Seven Points of Returning to Vitality" was taught to me by that demon. Now I am either killed or trampled on shit. Mr. Divine Fortune Teller said that I have lost 70% of my luck."
"Duan Don’t listen to a word the devil says! The fairy from the Wanmiao Palace was originally going to fly into the sky, but she became a demon overnight and became a witch. This is all the work of Old Devil Duan! "
...
Duan Yun is very puzzled. He only practices martial arts, teaches skills, and occasionally makes magic tricks, but how can he become an indescribable devil?
This is slander!
Why don’t I have any problems with the same exercises?
It’s you who are wrong, it can’t be me!