Toner (just like chalk, thinner than chalk. But the price is expensive, two or three yuan each. You can draw it realistically, but don't be too careful.)

Oil pastel (something resembling a crayon)

The above two are commonly used tools in creative examination.

Convenient, effective and fast drawing (I often use the above two)

Therefore, it should be considered as more in line with the requirements.

Water-soluble marker (this is the best, it can be painted with mixed colors over and over again, and it becomes watercolor when painted with clear water, or it can be painted without clear water, which is the effect of ordinary marker)

Color spray (this is a common tool for graffiti. You can just buy a nozzle and connect it directly to the bottle mouth of propylene or other pigments, and the pigments will vaporize and spray out.

Colored ink (commonly used in comics, dipped in strokes, absolutely meticulous, and without coloring, it is a pre-adjusted color, which is very convenient! ! There are two kinds of transparent and opaque, and transparent ones can be colored. Overlapping colors. Mixed color. )