What Does It Mean to Preach and Teach, Give Me That Kind of Skill?

"System + Invincibility + Funny Humor + Recruiting Disciples" After traveling through time and being a ninth prince, he just wants to show off every day, flirt with the little palace maids around him, and then inherit the throne from his great father. I thought his life would be so colorful, but a system of preaching and teaching happened. From that day on, Bai Ming stopped messing around and began to have goals in his life. I saw him shouting: "The cute loli, the sexy royal sister, the arrogant princess, the heroic female general, the noble empress... I am here to teach you!"