1. Official script can be used commercially, and it can also be used free of charge. The state stipulates that Song style, regular script and official script can be used free of charge and will not involve infringement.
2. Shu, a type of Chinese character, including Qin Li, Han Li, etc., is generally believed to have developed from seal script. The fonts are mostly wide and flat, with long horizontal strokes and short vertical strokes, emphasizing the "silkworm" style. "The head swallows the tail", "Twists and turns".
3. According to the unearthed slips, the official script was founded in the Qin Dynasty. It is said that Cheng Miao was the official. The Han official script reached its peak in the Eastern Han Dynasty. It inherited the tradition of seal script and opened up the Wei, Jin, Southern and Northern Dynasties, and influenced the calligraphy of later generations. It has an influence that cannot be underestimated. In the calligraphy circle, it is known as "Han Li Tang Kai".