The Teacher Is All Black Inside

My name is Shen Mo, and I'm a history teacher. My students think I'm gentle and refined, my colleagues think I'm aloof from worldly affairs. That is, until I dug open that ancient tomb and discovered the secrets of cultivators hidden in this world. I want to cultivate. So I need a stepping stone—like becoming the live-in son-in-law of the Li family. The Li family's daughter wants to use me to fend off an arranged marriage, I know; the Li family wants to use me as an obedient decoration, I know that too. But what they don't know is—this live-in son-in-law they treat as a pawn actually wants to take the whole chessboard away. My classroom teaches history, and I am writing history. Don't test my limits; I don't even know where they are.