Can cardboard calligraphy stamps cover the outside?

Inscription and seal are important parts of the whole calligraphy work. Generally, it is stamped on both sides, and the size and shape should be the same. Never be round on one side, one big and one small. It is better for both sides to print their names, and one side is also suitable. Upper yin and lower yang or upper yang and lower yin must not be both yin and yang. Don't stamp the top of the preceding paragraph, it will appear rude and affect the picture of the work. It is better to press the corner, and you can't poke around the work at will. It is better to cover less than to cover more. If the seal is poorly inked, it's best not to cover it.