Calling for "counterattacking the Ching" (who had just conquered the Ming), Cheng declared Taiwan the "Eastern Capital." The Cheng regime lasted through three rulers--Cheng Cheng-kung, Cheng Ching, and Cheng Ko-hsia--who were all called the "Duke of Yenping." The bureaucratic structure followed the Ming system.
鄭氏王朝在台歷任三位首長﹘﹘鄭成功、鄭經、鄭克塽都叫做「延平郡王」，典章制度悉遵明制。