Transparent painting is known to be the easiest painting technique on the shelf, dating back to the 15th century. It was the traditional European painting technique of the 19th century. Transparent painting is mainly to color masking, so that the two colors through the visual harmony to produce a third color, it is derived from the third harmonic color and physical harmony although the same hue, but the visual effect is not the same, the former is more deep, With a jewel-like luster. In the process of painting with transparent painting, the sketch of a painting is done without the use...