Ink wash painting β sumi-e in Japan, shuimo in China β is built on a single black pigment diluted to different strengths. There is no colour to fall back on and no way to correct a stroke once it is down, so the whole tradition is about deciding what to leave out. A mountain is three marks. A bird is two.
Empty space is the active ingredient. Untouched paper is read as mist, water, sky or distance depending on what surrounds it, which means a wash can suggest an entire valley by painting only its edges. Rendering more, not less, is the most common way to lose the style completely.
The mark itself carries the rest. A loaded brush lays a wet dark stroke that spreads into the fibres; a nearly dry one drags and splits, leaving the broken texture used for rock and bark. Naming loaded and dry brush separately in a prompt is what gives Artlist the two registers the tradition actually uses.