1, departure time. Seal script originated in the Yin and Shang Dynasties and is the earliest writing. It has a history of 3000 years. Seal script can be divided into big seal script and small seal script. Big seal script includes Oracle Bone Inscriptions, inscriptions on bronze and six kinds of characters. Lishu originated from the period when the Qin Dynasty unified the six countries. After Li Si founded Xiao Zhuan, he also adopted the official script compiled by Cheng Miao.
2. Font structure. Seal script pays attention to uniform and round lines, vertical structure and consistent line thickness. It has a rich and mellow beauty. Official script belongs to a more solemn font, paying attention to "silkworm head and goose tail" and "twists and turns", so the writing effect is slightly wider and flatter.
3. influence. Seal script is the earliest font, which has a great influence on China's characters and is an indispensable step in the evolution of modern Chinese characters. Official script evolved from seal script, which is an important change in calligraphy.
The above is about the difference between official script and seal script.