From the Start with a Broken Ship, I Built an Ironclad

Transmigrate to the Great Ming during the age of great voyages, only to become the penniless young master of a merchant guild with a million in debt? From the start, all you have is a leaky old ship, creditors pounding at your door, rivals squeezing you out, and pirates watching for their chance! At the critical moment, the Great Voyage Technology Tree System awakens! With silver and reputation, you can unlock the technology tree without limit! While everyone else is scrambling to buy Folangji cannons, the protagonist has already built a three-deck galleon. While rival factions fight tooth and nail over a single sea route, his invincible ironclad fleet sweeps across the oceans, using steam engines and Gatling naval guns to smash every obstacle! By the time the Ming emperor is still worrying about wiping out the Japanese pirates, the protagonist's invincible fleet has already blockaded the world's oceans. “Your Majesty, our merchant fleet only expanded a little. How did we end up ruling an empire where the sun never sets?”