According to historical records, Li Shimin, Emperor Taizong, studied calligraphy with Shi Ling, a calligrapher in Sui Dynasty, and often learned calligraphy skills from Yu Shinan, Ou Yangxun and Chu Suiliang at that time. Later, when I saw Wang Xizhi's Preface to the Lanting Pavilion, I couldn't put it down, and the calligraphy font of Emperor Taizong gradually developed into a running script. Because Emperor Taizong preferred running script, he vigorously developed and respected running script, which made it very popular at that time and laid the position of running script in the history of calligraphy today. Emperor Taizong himself is also a master of running script, but there are few works handed down from generation to generation. Only Wenquan Ming and Jinci Ming have been circulated so far. What's more worth mentioning is that Emperor Taizong engraved the inscription with the name of Hot Springs. This is the first time to carve inscriptions with running script, which has opened up a new field for the use of running script. Emperor Taizong made outstanding contributions to the development of running script.