Two: You can use only two words, one left and one right, or from right to left. This engraving method can have three changes: one yin and one yang, all yin or all yang.
Third, it is used for signing contracts and other business activities. The font is Li Shu, and the text uses the words "* * seal"; In calligraphy and painting works, seal script is the font and "* *" is the symbol.
For example, the first typesetting method of pictures
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Purpose of the seal: printed on the document as stationery, indicating identity or signature. Generally, seals should be stained with pigment before printing. Those that are not stained with pigment and will appear concave and convex after being printed on a flat surface are called steel seals, and some are wax prints printed on wax or wax paint or envelopes. Made of jade, metal, wood, stone, etc.
Refer to Baidu Encyclopedia: Seal