1. Some checkerboard objects can't be adjusted in size, so calligraphy practitioners don't have a better practice experience.
2. Some checkered cultural relics are a little more expensive and not very close to the people. But the advantages outweigh the disadvantages. The grid artifact combines the advantages of the above-mentioned open grid and dark grid, and it is in one step. The size of the grid can be adjusted at will, which can be used as both a paperweight and a grid for writing. After writing, it is fresh and natural.