Dong Qichang did not leave a book on calligraphy, but his experience and opinions in practice and research are scattered in a large number of inscriptions and postscript. Dong Qichang has a famous saying: "Jin people's books take rhyme, Tang people's books take method, and Song people's books take meaning." This is the first time in history that calligraphy theorists defined the aesthetic orientation of calligraphy in Jin and Tang Dynasties with three concepts: rhyme, method and meaning. These viewpoints have played a good role in explaining and guiding people to understand and learn classical calligraphy.