"The technique was to draw the outlines then do coloring. Some of those made by the Europeans featured elaborate decorative patterns, in baroque or rococo style, and are true old masters," says Tsao Yung-ho.
「這些手繪地圖是先描出輪廓再上色，有些歐洲人畫的台灣古地圖，還在圖上畫著巴洛克、洛可可風的裝飾圖案，稱得上是古藝術品了」，曹永和道。