(Im not really sure since it's blurry, but im going to guess)
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This art technique may be used with a Chinese brush. Though it may be smiliar with the watercolor we use in the west, it has a fingertip for dealing with a wide range of subjects and for producing the variations in line required by different styles. Since the materials used in calligraphy and painting are essentially the same, developments in calligraphic styles and techniques can also be used in painting as you can see the painting above.
There are also three types of paint brushes used in chinese paintings.
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Hsieh chao pi: crab claw brush, large and small sizes
Hua jan pi: brush for painting flowers
Lan yu chu pi: brush for painting orchids and bamboos
I hope this is what you mean