This is the character longevity in small seal script.
After Qin Shihuang unified China (in 221 BC), he implemented the policy of "writing with the same text and carriages with the same rails" and unifying weights and measures. Prime Minister Li Si was responsible for it. The large seal script originally used in the Qin State On the basis of this, we simplified it, canceled the other Six Kingdoms characters, and created a unified Chinese character writing form. 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. And because its strokes are complex, its form is ancient, and twists and turns can be added at will, seals were carved in seal script, especially official seals that required anti-counterfeiting, until the fall of the feudal dynasty and the emergence of new anti-counterfeiting technology in modern times.
During the Spring and Autumn Period and the Warring States Period, the feudal lords were divided, and the Chinese characters of each country appeared to be different from simplified to traditional, and one character had multiple shapes. After Qin Shihuang destroyed the six kingdoms, he ordered to use Qin's "Xiaozhuan" as the standard to unify the national writing system. Seal script, also known as "seal script", is the collective name of small seal script and large seal script. Because it is customary to call seal script "big seal script", later generations often refer to "zhuan script" specifically as small seal script.
Chinese characters have developed into the Xiaozhuan stage and gradually begun to take shape (outlines, strokes, and structures). The pictographic meaning has weakened, making the characters more symbolic and reducing confusion and difficulties in writing and reading. This has It is also the first time in the history of our country that administrative means have been used to standardize writing on a large scale. The Qin Dynasty used the compiled Xiaozhuan script to unify the national writing system. It not only basically eliminated the phenomenon of different writing styles in various places, but also greatly changed the situation of many different styles of ancient writing. It played an important role in the history of Chinese writing development.
The first is a rectangle, with one and a half characters in square regular script as the measure, one character as the main body, and half the characters as the vertical feet. The approximate ratio is about 3:2.
Second, the strokes are horizontally and vertically, evenly rounded, and basically the same thickness. All horizontal and vertical paintings are equidistant and parallel, and all strokes are mainly circles, with circles rising and closing, circles within squares, and squares within circles, making the circles flexible and interesting.
The third is balance and symmetry. The balance and symmetry of space division are the unique charm of seal script. Symmetry not only exists in left-right symmetry and up-down symmetry, but also exists in the local symmetry of the characters and the symmetry of the left and right inclinations of the arc-shaped strokes.
The fourth is to tighten up and loosen down. The main part of most characters in Xiaozhuan is in the upper half, and the lower half is a telescopic hanging foot. Of course, there are also characters with no feet at the bottom. The main strokes are in the lower part, and the upper strokes can be raised.
I hope I can help you clear up your doubts.