Original: In less than a year , he captured Fort Provintia and besieged Fort Zeelandia ; with no external help coming , Frederick Coyett , the Dutch governor negotiated a treaty '' Koxinga-Dutch Treaty (/O1662/O) '' Appendix 1 to Bullard , Monte R. ( unpub . )
Simplified: In less than a year , he took Fort Zeelandia and made an agreement '' Koxinga-Dutch with Frederick Coyett , the Dutch governor .