What is Deng Shiru's achievement?

According to the statistics of Deng's research data, there are as many as 137 works (including ink marks, inscriptions and double-hook books) preserved by Deng, and there are 173 seals, but more are actually preserved. Deng's attainments in calligraphy theory are also profound, and his principles of calligraphy structure and layout are very insightful. Deng also made great achievements in seal cutting. His seal cutting benefited from calligraphy, and entered the seal with the style of "Sangong Mountain Monument" and "Zen Mountain Monument", which was vigorous, solemn, smooth and fresh. His seal cutting is known as "Deng School" and "Hui School".