"They are coming."
Governor Frederick Coyett slammed the heavy parchment down on the oak table. It was his own letter—a frantic, ignored plea for reinforcements from the Dutch East India Company headquarters in Batavia, returned with nothing but excuses.
Coyett was solidly built, a man in his mid-forties with a squared jaw and a thick, dark Van Dyke beard. He wore the practical attire of a European colonial administrator—a heavy broadcloth coat with a wide, flat linen collar—but sweat already darkened the armpits. He stepped to the high stone window of Fort Zeelandia and looked out at the Taiwan Strait.
The horizon was bleeding red.
Four hundred war junks, their crimson sails blotting out the April sky, carried twenty-five thousand soldiers toward the bay.
On the deck of the lead flagship stood Koxinga. At thirty-seven, his pale, sharp face vibrated with a tense, rigid energy. The refined, flowing robes of his youth were gone, replaced by heavy, dark-toned lamellar armor over silk. A Ming straight sword hung at his side, paired with a curved Japanese blade. He possessed the cold, exhausted gaze of an apex predator that had been backed into a corner and was preparing to bite its way out.
And he was cornered. His catastrophic defeat beneath the walls of Nanjing had decimated his army and left the Ming loyalists pushed into the sea. To survive the encroaching Manchu Qing empire, Koxinga needed an impregnable, agricultural stronghold far beyond the reach of their cavalry. He needed the island of Formosa. To take it, he had to evict the most advanced military mega-corporation in the world.
The Dutch cannons of Fort Zeelandia were massive, locking down the deep main channel. A frontal naval assault would have been suicide. But Koxinga had not sailed blindly. He carried a secret weapon: He Bin, a Chinese defector who had provided Koxinga with precise tidal charts of the bay.
On the morning of April 2, 1661, Koxinga utilized a miraculous high spring tide. While the Dutch gunners watched the main channel, Koxinga's massive armada slipped through a shallow, treacherous waterway known as the Luermen—the "Deer Ear Gate." It was a passage the Dutch believed was impassable for war fleets.
By the time the sun fully rose, Coyett looked out from his ramparts to see thousands of Chinese troops disembarking in his own backyard. The Dutch were completely outflanked. Within days, the smaller Fort Provintia surrendered, and Coyett was trapped behind the high stone walls of Zeelandia.
Koxinga needed a quick surrender to feed his massive army, so he resorted to psychological terror. In late May, he sent a captured Dutch minister, Antonius Hambroek, into Fort Zeelandia as an emissary. The terms were brutal: surrender the fort, or Koxinga would execute the Dutch hostages held in his camp—including Hambroek's own wife and children.
Hambroek stood in Coyett's chambers. Two of his married daughters, who had sought refuge in the fort, wept and clung to his black minister's robes. But instead of begging Coyett to yield, Hambroek looked the Governor in the eye.
"Do not surrender," Hambroek told him. "His men are weary. They are vulnerable to a siege."
Gently detaching himself from his weeping daughters, Hambroek turned and walked out the gates, across the sandy no-man's-land, and back into Koxinga's camp to face his execution.
Hambroek's sacrifice proved one thing to Koxinga: the Dutch would not break easily. This would be a war of annihilation.
*
Later European chroniclers loved to tell the story of the Siege of Zeelandia as a tale of Western superiority—a few hundred brave Dutchmen holding out against an endless Asian horde purely because of their advanced technology.
The truth was entirely different.
When a confident Dutch commander marched elite musketeers out to crush the Chinese infantry, Koxinga's troops did not panic. They used tactical formations from ancient texts, absorbed the musket volleys behind heavy shields, and then shattered the Dutch lines with deadly composite bows and heavy infantry charges.
Furthermore, Koxinga possessed modern cannons and a firm grasp of Renaissance siege geometry. He blasted the Dutch outworks with calculated precision. The historical reality was military parity.
But Fort Zeelandia was a state-of-the-art trace italienne—a star-fort with angled bastions designed specifically to absorb and deflect artillery fire. Koxinga's cannons could dent the walls, but they could not easily breach them.
So, the siege ground into a suffocating stalemate.
The clock ticked through the sweltering tropical summer and into the winter. For nine months, disease, malaria, and starvation ravaged both sides. Inside the fort, Coyett paced the ramparts in a dented steel cuirass, his eyes frantically scanning the empty sea for a VOC relief fleet from Batavia that would never come. Outside, Koxinga's "Iron Men" died of fever in their muddy trenches.
By January 1662, the deadlock was broken by treason.
A German mercenary sergeant named Hans Jurgen Radis, starving and desperate inside the fort, slipped past the Dutch sentries under the cover of night. Brought before Koxinga's command tent, Radis pointed a dirt-caked finger at a map of Zeelandia's defenses.
He revealed a fatal geometric flaw the Chinese engineers had missed: the Utrecht redoubt.
"It sits on a hill," Radis explained, tracing the elevation. "Your cannons are firing flat against the main walls. But if you take this redoubt... you shoot straight down into their courtyard. You blow their powder magazines to ash."
Koxinga's exhausted eyes narrowed. He did not hesitate.
Over the next forty8 hours, Koxinga's men hauled twenty-eight heavy siege cannons up the elevation. On January 25, 1662, with Radis advising the Chinese gunners, the sky tore open.
The bombardment was devastatingly accurate. The Utrecht redoubt was blasted to rubble in a single day. Just as the defector promised, Chinese cannons now rained iron fire directly over the walls and into the vulnerable, unarmored heart of Fort Zeelandia.
Inside the smoky, screaming courtyard, Frederick Coyett looked around at the shattered masonry and the broken bodies of his men. The walls were breached. The food was gone.
He had done all a man could do.
On February 1, 1662, Coyett signed the capitulation. Koxinga, showing the disciplined statesmanship that European myths often denied him, allowed the Dutch Governor and his surviving people to board their remaining ships and sail away with their lives and personal property. Thirty-eight years of European colonial rule on the island vanished with the tide.
Koxinga stood atop the conquered battlements of Zeelandia, the ocean wind whipping his dark hair. Above him, his soldiers unfurled the massive Ming imperial dragon flag, letting it snap against the blue sky.
He had done it. He had secured a fortress the Qing cavalry could never reach. He declared the island the Kingdom of Tungning—the first Han Chinese government in Taiwan's history. It was a monumental victory, a kingdom carved from the sea.
But as he watched the Dutch sails retreat over the horizon, a scout scrambled up the stone steps of the redoubt and dropped to one knee.
"My Lord," the scout gasped, holding up a sealed tube. "A message from the mainland. From Beijing."
Koxinga had won his island stronghold. But across the strait, the Qing Emperor had finally run out of patience.