What kind of fonts did Cheng Miao create?

Cheng Miao founded official script on the basis of Xiao Zhuan. Official script is superior to seal script. Later, official script replaced seal script, and official script of Qin dynasty spread all over the country. The appearance of official script is a great progress in Chinese character writing and a revolution in the history of calligraphy. It not only makes Chinese characters tend to be square, but also breaks through a single center in brushwork, laying the foundation for various calligraphy schools in the future.