Time Travel: Follow the Protagonist to Pick up Missing Pieces

I'm not the protagonist! What should I do if I become a walk-on after traveling to another world and have no talent for cultivation? Don't worry, just hug the protagonist's lap and follow him to eat and drink. A magic weapon that the protagonist despises? I want it! A skill that the protagonist doesn't like? I want it! Fall in love with the protagonist's girl? Let me, Cao, ask for it first! But before that, I have to figure out one question: Is the protagonist's surname Xiao or Tang... (Please comment more and point out my shortcomings!)