Introduction to the Shimen Thirteen Products Exhibition Room: "Shimen Thirteen Products" is the treasure of the Hanzhong Museum. Among them, "Da Kaitong" was written in seal script and official script, "natural and ancient, with natural stone patterns"; "Ode to the Stone Gate", the best work written in Han Dynasty and official script, "is like wild cranes and gulls, fluttering like immortals"; "Shimen Inscription" was changed from official script to regular script And the two characters "Gun Xue" written in Cao Cao's handwriting are majestic, elegant and unrestrained.