Jin Nong (1687~1763 A.D, Qing Dynasty) was famous well-known as a calligrapher and artist in history, but less known that he was also expert in inkstones. He was so immersed in the inkstone learning. He named himself Bai-Er-Yan-Tian-Fu-Weng, which means the one who has lots of inkstones. Jin Nong wrote and published Dongxinzhai Yanming (Inkstone Inscriptions from Dongxin Studio), which was the first private book published about inkstone study. This volume was published when Jin Nong was 47 years old, and it was the source book to learn more about Jin Nong’s study in inkstone, paintings, calligraphy, knowledge, friendship relation before middle aged, and more. However, Jin was so knowledgeable that he used many a lot of quotations from classics so that it is difficult to understand what the true main meanings Jin wanted to show from the inscriptions on inkstone. Unfortunately, there were few reviewers commented on Dongxinzhai Yanming. The author wrote this article to show Jin’s main true meanings from Caoshu Dayanming (Cursive Inscription on the Large Inkstone). It is wonderful to find that Jin Nong learned Xingcao (cursive) from Yang’s works, (Yang Ningshi, 873~954 A.D. Five Dynasties) and deeply affected by Yang. Caoshu Dayanming unfolded Jin’s study on calligraphy and Xingcao before us. It is so meaningful.