Siege of Fort Zeelandia
The men laid siege to Fort Provintia and it surrendered on April 4. Three days after the capture of Fort Provintia, Koxinga's men surrounded Fort Zeelandia and demanded its surrender. Koxinga sent a Dutch priest, Anthonius Hambroek, to ask for this surrender. Hambroek did not do this and he was killed after returning to Koxinga's camp.