Technological Treasure Hunting in Great Navigation

"Hero, does he have a revolver?" A pirate captain asked. "Yes!" A certain man said without caring. "Hero, do you have an RPG rocket launcher?" The captain of a certain fleet asked. "Yes!" A certain man said after calculating the price. "President, do you have an invincible battleship?" The king of a small country asked. "You probably have this, but you can't afford it..." A certain man replied directly. When the goddess of the ocean chose Wang Haidong to enter the world, a certain man was about to begin his shameless sailing career!