Great Ming: I, Chongzhen, Build Aircraft Carriers and Colonize the World

He transmigrates to the end of the Ming dynasty and becomes its last emperor, Zhu Youjian. In his previous life, after rebel king Li Zicheng captured the capital, Zhu Youjian climbed the city tower and beat the war drum for three hours. Yet no one came to defend the emperor! No one came to the palace to pay their respects! In the end, he met a tragic fate, hanging himself in despair from a crooked-neck tree on Coal Hill. Perhaps because he could not let go of his regret, Zhu Youjian transmigrates back to three months before the fall of the dynasty and his suicide. Unexpectedly, he awakens the Spending System. [Congratulations, Host, you purchased: cannons, aircraft carriers, J-38s, bombers...] [Congratulations, you purchased 300,000 cavalrymen! Every one of them is strong, sturdy, and broad-shouldered] Li Zicheng: “The three months are up. My 300,000 troops are about to storm the capital, and the Ming dynasty is about to fall! Hahaha... Wait, what the hell is that flying in the sky? And why are all 300,000 of my men sickly and skinny, while the Ming soldiers are strong, sturdy, and broad-shouldered?” [Congratulations, Host, you purchased: bulletproof glass, tear gas, poison gas...] Later Jin: “Soldiers of Later Jin, take up your weapons and charge into battle! The swords we forge are unmatched in the world... Wait, what the hell is this white glass? It won’t even change color when we hack at it. What happened to being unmatched in the world?” [Congratulations, Host, you purchased: bionic combat suits made of indestructible fabric!] Enemy general: “I am the strongest warrior of Later Jin, and my blade is hungry for blood... Wait, the Ming emperor isn’t even dodging my attack? You’re asking to die!” Donglin faction: “Quick, open the city gates and welcome King Chuang into the capital! Our whole clans will earn merit by supporting the new ruler!”