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

Zhu Asi greeted Ning Xuezhe. "Ning Xuezhe, I'm Zhu Asi, the top prodigy of Zhuyan Palace. I don't know if you know anyone else here, so let them introduce themselves."

Just as the others were about to introduce themselves, Ning Xuezhe shook his head, "You don't need to. I already know that I've lived for countless years. I've lived longer than you."

Hearing this, everyone looked at each other and could not help but ask, "Ning Xuezhe, what did you do? How can you live for so long? Don't you still need other people's primordial spirits to increase your lifespan?"

Ning Xuezhe was a little embarrassed and scratched his head, "I'm actually a turtle spirit from the deep mountains. I've been traveling across the world of immortal cultivation and don't care much about it. I know some of your secrets, but I don't care about them."

Thousand Sound Flute