Review Detail of FrozenApple in The Entire Mankind is Acting As Me, I Shall Secretly Build a Battleship and Shock the World

This author is really something. Both his works from the trial read are nicely written and interesting. For this novel, both the concept and the goal of system are unique. I just couldn't understand how would the MC build the spaceship by himself, but... that's the matter for another day right? I bet all the audience would have aneurysm and die when he starts building the spaceship haha.