How to preserve calligraphy without mounting?

Preservation method of unpainted calligraphy: don't fold and pile up the unexpanded parts of calligraphy and painting casually, otherwise it will be broken and hung from the fold for a while and then rolled up for a while; For ancient paintings and calligraphy, hang them regularly for ventilation, or leave black creases at the folds, and don't put heavy objects on them. If you want to enjoy it temporarily, don't nail it to the wall or stick it to the wall with paste. Painting and calligraphy should not be hung for a long time, otherwise it will directly damage the painting and calligraphy works. The correct way to preserve paintings and calligraphy works is to line them with a thin layer of rice paper or leather paper with similar width, especially ancient paintings and calligraphy works. After painting and calligraphy are mounted, they should be properly preserved and put in place. First of all, we should consider moisture-proof, moth-proof, rat-proof, mildew-proof and antifouling. You can put each painting and calligraphy in a plastic bag or cloth bag. When stored in one place, we should first consider moisture-proof, moth-proof, rat-proof, mildew-proof and pollution-proof. Painting and calligraphy mounting pieces should not be rolled too tightly or too loosely when stored, which may also cause the mounting pieces to deform or fall off; If the volume is too loose, it cannot be rewound. If it is rolled too tightly, the seam between the painting center and the edge material will be left on both sides of the head, and the seam between the painting center and the edge material will be left on both sides of the head and placed in the picture box or bookcase.