The Sword Testing Stone is located on the southwest side of the Chessboard Stone and is formed by natural weathering and gravity of giant granite. It looks like a sharp sword splitting open, hence the name "Sword Testing Stone". According to legend, when Tang King Li Shimin traveled to Guifeng Mountain, he was drunk and in high spirits. He recited poetry, wielded a sword, and struck a rock with one strike, leaving behind this scene. The sword path by the stone still exists, bearing witness to a millennium legend. Nowadays, tourists can still stop here to admire the stones, reminisce about the heroic spirit of the Tang king in the past, and feel the unique charm of the interweaving of history and nature.