Calligraphy competition. The teacher asked for 30cm*40cm paper. Is it 8K paper? What kind of grid is a regular calligraphy competition?

If it's rice paper, it should be cut into such a big size, not entirely 8K paper, but almost as big as A3 paper. There is no special requirement for checking in a regular calligraphy competition, and the writer depends on the situation. If you want to check, it is recommended to use a red gel pen (0.5mm core), so that you won't eat words on such a small piece of paper, which is what we usually say, and the effect will be better. Try it? I hope I can help you.