As An Immortal, I Only Learn Forbidden Skills

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. — Description from novelcodex.org