How Did He Become the King of the Island Country When He Was Just a Sophomore?

As soon as I inherited a country, my beautiful secretary told me that the treasury was empty and it was about to go bankrupt? It's okay, I have the King System in hand, I own the world! Bankrupt island country → the richest technology empire in the world! Rebellion Cabinet → My most loyal dog-licking minister! Bingshan Female Secretary→Personally-fitting little cotton-padded jacket! "Your Majesty, Finance Minister Philip proposes to merge into the federation of other countries in exchange for assistance!" I sneered and directly punched out the oil field report rewarded by the system: "Is an oil field with trillions of reserves enough?" "Your Majesty, Australia has blocked our economic lifeline!" I threw out the black technology blueprint given by the system with my backhand: "Hypersonic express, covering the whole world, do you need to see his face?" Seeing the Oran Kingdom getting stronger and stronger, the beautiful secretary looked at me in a way that was gradually wrong. "Your Majesty, how many other trump cards have you hidden?" I hugged her slender waist and looked down at my land: "My goal is to plant this lion flag all over the sea of stars!"