Best Ghostwriting System

Time travel! Huang Yu was very excited after successfully traveling through time because he still had a system, but why can I still only write novels? What about the promised upgrade for killing monsters? Everyone is invincible, but what about you? Are you sure you are not seeking death from the system? Don't you know how scary it is to rush for updates? You, you, you, you are looking for death, why are you looking for me?