The Undercover Demon Sect Was Abandoned, and All Living Beings Regretted It After Taking Revenge.

In the world of cultivating immortals, Gu Ling has been undercover in the Demon Sect for ten years. He endured humiliation and infamy. He secretly sabotaged the Demon Sect's plan and protected the Righteous Sect members. In the end, when he sacrificed his life to kill the Demon Lord, the righteous people besieged him for a copy of the Demonic Cultivation Technique! These people even dug up his sister's Ji Dao bones, causing his sister to die. Why? Gu Ling's heart was burning with flames of extreme anger! His mind has been twisted! At this moment, he bound an energy conversion system. As long as he absorbed the energy of heavenly materials and earthly treasures, he could convert it into cultivation and martial arts proficiency. From then on, a demon even more terrifying than the former demon lord came to the world, making the righteous path miserable. In the end, he imprisoned everyone and inadvertently revealed his memories. His former friends learned the truth and regretted it. But, it's too late! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.