Knowledge expansion:
Seal script is one of the ancient Chinese characters, also called seal script. It is a general term for ancient Chinese characters. "Seal makers spread it, spread its physics, and apply it endlessly." The ancients thought that seal script was written by Cang Xie, but this is not credible. The generation of a kind of writing needs a long development process, and it is impossible for a person to complete it in a short time. Generally speaking, seal script includes all the characters before official script and their extended genera, such as bronze inscriptions, Shi Guwen, ancient prose of Six Kingdoms, small seal script, Miao seal script, overlapping seal script and so on. Narrow sense mainly refers to "Da Zhuan" and "Xiao Zhuan". The font of seal script is round and the structure conforms to the meaning of six books, so Sun said in the Tang Dynasty, "Seal script is graceful and smooth".
Big seal script refers to inscriptions on bronze inscriptions, bronzes and six-country scripts, which retain the obvious characteristics of ancient hieroglyphics. Xiao Zhuan, also known as "Qin Zhuan", is a commonly used character in Qin State and a simplified font of Da Zhuan, which is characterized by uniform and neat glyphs and is easier to write than Wen Shu. In the development history of Chinese characters, it is the transition between seal script and official script.
After Qin Shihuang unified China (22 1 year ago), Xiao Zhuan implemented the policy of "the words are the same, the cars are the same", and unified measurement is responsible. On the basis of the original script of the Qin Dynasty's Da Zhuan, it was simplified, and the variant characters of other six countries were cancelled, creating a unified writing form of Chinese characters. It was popular in China until the end of the Western Han Dynasty (about 8 AD) and was gradually replaced by official script. But because of its beautiful font, it has always been favored by calligraphers.