How to use Gundam Special Gou Xianbi?

If there is no concave line (convex line), don't use that to hook it. Draw a line roughly with a sharpened pencil first, and then use your pencil (water like Gou Xianbi) to follow the pencil line. Don't wipe it in a hurry at this time, tick it when it is dry, and tick it when it is dry. After drying for the third time, gently wipe the lines with a paper towel (don't get wet, don't use too much force, don't use your fingers and nails), or gently wipe them with an eraser. By the way, don't tick back and forth, just tick one direction at a time. Basically, after wiping the wire, there will be some paint left (that ... should not be counted as paint). If you wipe the thread once, you should hook it several times and dry it fully every time. The adhesion of that thing is really poor. If it is on the paint surface (and it is matte), never use it to hook it (it will be old if you hook it, and you can't clean it if you want to wipe it).