The general name of big seal script and small seal script is seal script.
Dazhuan refers to Oracle Bone Inscriptions, Jinwen, Jinwen and Six Kingdoms, and retains the obvious features of ancient hieroglyphics.
Xiao Zhuan, also known as "Qin Zhuan", is the common language of Qin State. After Qin Shihuang unified China (22 1 year ago), he implemented the policy of "the same language in words, the same rail in cars", and the policy of unified measurement was in the charge of Prime Minister Li Si. On the basis of the original script of Da Zhuan script used in Qin State, it was simplified, and the other six scripts were cancelled, creating a unified Chinese 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.