2. Paint the color on the line. The pigment should not contain too much water, and the saturation and sufficient moisture absorption of the line shall prevail.
3. I need someone to help me, tighten the other end of the line slightly, then pull up the middle part of the line and let it go gently, and the color will bounce directly on the paper.
Tip: vertical pull (both ends of the line are on a horizontal line with the pull point) has moderate elasticity.
Disadvantages: if you don't master it well, the shape of the line will have burrs.