Which calligrapher in ancient times wrote a good seal script? Famous or a dynasty. Thank you.

1- Xiao Zhuan is an official script after the unification of Qin Dynasty, and it is a unified character used in the whole country after Li Si reorganized and transformed the Qin language. Therefore, Biography is the most famous one written by Li Si, and its representative works include The Carving of Stone in Qinshan and Langya Taiwan. In addition, the two monuments "Huiji" and "Yishan" were copied by later generations.

2- In the Tang Dynasty, Li wrote Xiao Zhuan, and its copybook included Qian Zi Wen of Zhuan Shu.

3- The number of seal scripts in Qing Dynasty was Deng and Wu Changshuo. These people have many publications, you can search for them yourself.