Vast Sky Drizzle

When Jiang Ming woke up in a strange world, he learned he had obtained immortality. In the dangerous and ruthless world of cultivation, he was determined to carve his unique path. Taking advantage of his immortality, he vowed to learn forbidden skills that would normally eat away at the user’s life. 
As he continued on his path, Jiang Ming realized that with his forbidden skills, he could become the strongest. 

As An Immortal, I Only Learn Forbidden Skills

CatABoo

Jiang Ming looked at Dr. Sun and said with some disdain, "Don't tell me that your natal technique is something along the lines of digging out your heart and cutting out your liver or something."

He always felt that Dr. Sun was too different from the immortal cultivators he had imagined. He even suspected that this guy was practicing some kind of sham technique.

"Other people cultivated their spiritual cores. Why are you the only one who focused all your efforts on the heart?"

No wonder he was being hunted down so miserably. It was not without reason.

"Kid, are you blind? This natal technique of mine is an amazing technique that many cultivators can't even dream of obtaining. Even my greatest enemy chased after me for this technique."

"Then why do you still want me to learn it? If I were to be discovered by your enemy, wouldn't I be dead?" Jiang Ming ridiculed him.

Natal Technique (1)