蔡邕
The stele were about 2.5 meters in height and a meter in width. Scholars, which included Ma Midi, Han Yue, Lu Zhi, Yang Bao, Li Xun, and Zhao You besides Cai Yong, would write text onto the stone using cinnabar, which was then engraved. When completed, 28 stela containing the "Changes", "History", "Chunqiu", and the Gongyang commentary, were arranged on the western side of a roughly "U" form. The 15 stela with the "Ritual", including the names of Cai Yong and Ma Midi, were placed on the southern side, while the 5 stela containing the "Analects" were on the eastern side. Scholars could then take rubbings, besides studying the texts.