Tuo's Chinese character writing format is a new Chinese character writing format, which combines the advantages of traditional regular grid, grid, grid and grid, and further improves the Chinese character writing function. It is the most scientific and practical Chinese character learning format at present. This case was studied by Mr. Duo Chunshuang, a famous calligrapher in China, in his calligraphy practice and education for more than 40 years. It was declared on 1992, and was granted the patent right by the Patent Office of the People's Republic of China (now China National Intellectual Property Administration of the People's Republic of China). The bureau is named after the surname of its research inventor-Tuo Humeig. Later, Ruan Chunshuang boldly explored his use technology and made a breakthrough, forming today's Ruan calligraphy technology.