How did the calligraphy of tablet inscriptions develop in Ganjia period?

During the period of Gan and Jia, there were many calligraphers engaged in the research and creation of seal script and official script, and there were many talented people, many times more than before. In addition to the above schools, there are Ding Jing, Chen Hongshou and Zhao of the Eight Schools in Xiling, Gao He of the Eight Eccentrics in Yangzhou, and Hong He who studies philology. Although they have not made a breakthrough in the pen and ink skills and style orientation of seal script and official script, their participation in theory and practice has played an important role in prospering and improving the level of seal script and official script, and promoting the all-round development of tablet calligraphy.