The so-called "Thirteen Classics of Shimen" is represented by the east and west walls of Shimen Cave, Ode to Shimen carved in the Eastern Han Dynasty and Shimen Ming carved in the Northern Wei Dynasty. Among them, Ode to Shimen has long been famous all over the country, and it is a treasure to study the ancient traffic history and calligraphy art in China. Especially its calligraphy, is Han Li's masterpiece.