Li Shu, such as Qin Li and Han Li, is generally considered to be developed from seal script, with wide and flat font, long horizontal painting and short vertical painting, and paying attention to "swallow tail of silkworm head" and "twists and turns".
According to the unearthed bamboo slips, official script originated in Qin Dynasty, and Cheng Miao was also called official script. Han Li reached its peak in the Eastern Han Dynasty, inherited the tradition of seal script, and opened the Wei, Jin, Southern and Northern Dynasties, which had a great influence on later calligraphy. The calligraphy circle is known as "Tang Kai of Han Li".
Extended data:
Structural characteristics of official script
1, the glyph is divided left and right, which is contrary to the normal vertical trend of seal script, and changed to horizontal trend, resulting in the glyph still being flat, the strokes shrinking vertically, and strengthening the horizontal distribution.
2. Swallowtail of silkworm head is a typical feature of official script pen, especially in official script, the main pen is horizontal, and painting is almost always used in this way. The so-called "silkworm head" refers to hiding the (reverse) front in the process of using the pen, and at the same time writing the stroke shape formed in the process of starting the pen into a shape similar to that of the silkworm head. "Dovetail", that is, press the pen at the pen-receiving place, and then pick the pen obliquely to the upper right.
3. Turning a circle into a square and an arc into a straight are two basic methods to simplify seal script. But if you don't know the circle of seal script, it is not easy to master the side of official script. Because the straight painting or square folding in official script contains the arc potential of seal script, the straight of official script often has obvious ups and downs and is full of vitality. In fact, the brushwork of official script is based on the way of stroke movement.