Among the documents at the National Palace Museum, there is a "Sketch Map of Taiwan" with both Chinese and Manchu writing probably drafted in 1681. From it, one can see the court's knowledge of Taiwan at that time.
故宮台灣史料裡，有張推測約在康熙二十年間（一六八一年）繪製、滿漢文簽注各一幅的《台灣略圖》，約略可見當時清廷對台灣的理解。