How to match watercolor pigments with various colors? How to choose materials such as rice paper, some of which are of poor quality, and how to adjust the color depth when painting lotus flowers?

Red+blue = purple

Blue+yellow = green

Red+yellow+blue = black.

Pink lemon yellow = lemon yellow+pure white

Garcinia cambogia = lemon yellow+rose red

Orange = lemon yellow+rose red

Khaki = lemon yellow+pure black+rose red

Cooked brown = lemon yellow+pure black+rose red

Pink rose = pure white+rose.

Vermilion = lemon yellow+rose red

Dark red = rose red+pure black.

Purple = pure purple+rose.

Chu Shihong = Rose Red+Lemon Yellow+Pure Black

Pink blue = pure white+sky blue

Turquoise = grass green+sky blue

Grey blue = sky blue+pure black.

Light gray blue = sky blue+pure black+pure purple

Pink green = pure white+grass green

Yellow and green = lemon yellow+grass green

Dark green = grass green+pure black

Pink purple = pure white+pure purple

Brown = rose+pure black

Red+lemon yellow+lake blue-ripe brown (in fact, it can be almost black)

Red+lemon yellow-orange yellow

Lemon yellow+lake blue-grass green, more lake blue is pink green.

Red+lake blue-violet, more red is rose red.

Red+orange-medium yellow

Red+Grass Green-Mature Brown

Red+Violet-Rose Red

Lemon yellow+purple ripe brown

Lemon yellow+grass green-light green

Lake blue+purple purple good rice paper: uniform thickness, tough and moist, smooth but not slippery, white and dense, pure texture, lossless rubbing, strong ink wetting. Watercolor pigments have strict requirements on water. Practice often.