In Yongli 15th year (1661), Zheng Chenggong led his troops into Taiwan and the Dutch surrendered. Zheng renamed Taiwan as Dongdu, or the Eastern Capital, and instituted one prefecture (fu) and two counties, i.e. Chengtian Prefecture, Tianxing County, and Wannian County. The government of Wannian County was situated in the current Zuoying District of Kaohsiung City and the administrative area of Wannian County included the current Kaohsiung City, Kaohsiung County, Pingtung County and part of Tainan County.





