What is the achievement of Wu Da's seal script?

Wu Da (1835 ~ 1902) was born in Wuxian County, Jiangsu Province. In the seventh year of Tongzhi (1868), he was a scholar, edited and edited successively, studied politics in Shaanxi and Gansu, was a Taoist priest in Henan and Hebei, and was the governor of Guangdong and Guangxi.

Wu Da is a famous epigraphy archaeologist in the late Qing Dynasty, with many works. At the same time, he also made great achievements in calligraphy practice, especially at that time. Li, a master of Xiao Zhuan in Wuda University, carved 50 copies of Xiao Jing in his twenties. After that, he devoted himself to the study of inscriptions, and he realized that the styles of these two kinds of seal scripts are the same and unique. Taking Xiao Zhuan as the inscription, it turns arrogance into steadiness, mottled into fluency, and it is thin, thick and simple in one place. His seal script is pure and elegant, with even and straight lines, which is unique among many seal script writers in the Qing Dynasty. There are works handed down from generation to generation, such as Know Axis.