1, rice paper with black cardboard or ink brush. Cardboard can be written with a clean pen dipped in diluted white pigment, try more when it is wet or dry; You can also write in white ink. I usually use the latter. Xuan paper is written with white signature pen or highlighter pen, and the effect is also very good.
2. Put waxed paper on white paper, write on it with a finished ballpoint pen or signature pen, then take off the waxed paper and dip it with a brush to get a pen work with the effect of extending the column. If you want to strengthen the effect of the extension of the central column, you can take off the wax paper after writing and blow it with a hair dryer, which will have a better mottling effect. Most of them can be controlled at one time.