1. Name number printing: print the name, form characters or number of the signatory. If there is one more Chinese name, print its three words, and if there is no "print", print it. Since the Tang and Song Dynasties, Zhu Wen has been regarded as the positive case, and some people have added the word "teacher" to their surnames. Modern people also have pen names, which also belong to this category.
2. official seal: the ancients often named their rooms and study rooms, and often printed them. Don Li Qin has a seal of "End Room", which is probably the earliest seal of this kind.
3. Book seal: add "notice", "white matter" and "words" after the seal name. Today, there are those who "bid farewell", "sincerely seal" and "nod". This kind of seal is specially used for exchanging books and letters.
Extended data:
1, Bai Zhu Text Printing
Zhu's alternate printing style is very ingenious in China and India. It is said that it originated in the Eastern Han Dynasty. Its ways are extremely diverse, and the position arrangement and word number of Bai Zhu characters can be flexibly changed without restriction. The number of seals cited here can be seen.
Bai Zhu's principle is to look at the number of strokes, Zhu Wen is mostly the number of strokes, Zhu Wen is mostly the number of strokes, while Bai Wen is the opposite, thus achieving the harmonious effect of Zhu Bairu and Bai Ruzhu. Most of these seals are privately printed and not used for official seals.
2. Main seal
Mother seal, also known as "seal", originated in the Eastern Han Dynasty and prevailed in the Wei, Jin and Six Dynasties. It is a seal composed of two or three seals. A person's stomach is empty, and one or two baby seals can be properly inserted to form the shape of a mother's pocket. There are also two seals on one side (such as the "country one" seal in the right column) to form a group of three parties. There are several seals in the volume of one seal, which shows the technical level of ancient printing.
3. Six-sided printing
There are few six-sided prints handed down from generation to generation. This kind of "convex" print has a hole in the nose, which can be worn, and a small print on the nose, together with the other five printing surfaces, is called six-sided print.
The typical style of six-sided printing handed down from ancient times is a white band with one line for each word, which is dense on the top and sparse on the bottom. The vertical strokes of the seal are long and drooping, and the tip is as sharp as a hanging needle, so it has the common name of "hanging needle seal". Although this style has the advantages of stroke stretching and contrast, it is easy to become vulgar, far less than that of China and India, so seal engravers have only done it occasionally.
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