Why is Zheng Daozhao's calligraphy the best in regular script?

Although there are hundreds of schools of thought and styles in Wei Bei, there are only more than 2 inscriptions preserved so far, and only 1 schools of their own. Zheng Daozhao is one of them, but as many as 42 inscriptions have been preserved here. No matter the attainments of calligraphy or the number of carved stones, scholars of all ages flocked here like pilgrims.

In p>1998, Yunfeng Mountain was designated as a national key cultural relics protection unit by the State Council. Zheng Daozhao's calligraphy is regarded as the most regular script, which is valuable information for studying the evolution of Chinese characters from official script to regular script.