I Really Didn't Know I Was the Boss

Gu Fan traveled through the fantasy world, but he couldn't practice cultivation and could only settle down and be a mortal. Play the piano, write, and play chess when you have nothing to do... Just to spend the day. But I don't know—— He plays the piano, which contains the principles of great truth and the rules of heaven and earth. His writing contains supreme swordsmanship and is proud of the sky. He plays chess, plans for eternity, and plays with all living beings. When he paints, the avenue flows and the Tao Yun is filled. Suddenly discovered—— The student who studies chess with him all day long is the Immortal Chess Saint, the old man who practices calligraphy with him all day long is the Immortal Sword Master, the little snake who follows him all day long is the Supreme of the Demon Clan, and the only female disciple he accepts is also the reincarnation of the Demon Emperor.