I Am the Villain in the World of Martial Arts

Shen Jue was reborn and obtained a mysterious ancient book. He could acquire various martial arts skills in the martial arts world of his previous life. So, Zhang Sanfeng's Pure Yang Wuji Kung Fu, the Huashan Sword Technique of the Huashan Sect, the Seven Injury Fist of the Kongtong Sect... There are also the Daoxin Demon Cultivation Method in Tianmo Ce, Guangchengzi's Secret of Immortality... And... He worked hard, and finally his sect became a holy place for people of the right path. He was born in the Demon Sect, and finally unified the Demonic Way and became the Supreme Demonic Way. Some say he is righteous, some say he is evil. "What is good and what is evil. Now I define good and evil. My name is Shen Jue."