I'm Learning Heresy All by Myself

After traveling to the alien world, Lin Yuan only had two things to rely on: A homeless man's body without relatives, A system that specializes in teaching heretics. Talisman, Gu, corpse exorcism, victory, blessing, puppet... The unorthodox methods that orthodox strangers looked down upon were mastered in his hands. Until at the foot of Longhu Mountain, he blocked an all-out killing move for a girl he had never met before. The girl wiped the blood from the corner of his mouth and asked his name. Lin Yuan smiled: "It's just a wild way, not worth mentioning." Lu Linglong stared at the paper talisman ashes that had not yet dispersed in his palm, her eyes bright: "Ye Luzi? Then you can teach me." —— There is no right path, only the mind. By following the side door, you can also reach the sky. (The single female protagonist Lu Linglong has grown up slowly and has some second-generation content)