Mr. Shang Shunwen, the calligrapher of Beijing Headquarters of Giant Education and the inventor of Giant's Five-Day Calligraphy, has made bold exploration and innovation after more than 20 years of calligraphy teaching research, and constantly changed on the basis of digesting, absorbing, integrating and infiltrating traditional calligraphy practice methods, overcoming the shortcomings of traditional calligraphy practice such as long time, repeated training, low efficiency and easy boring.