Introduction to the Sword Viewing Gallery: Jianmen Mountain is a natural place with a magical landscape. The large and small Jianshan Mountains are lined with stone walls, and the peaks are like swords thrust into the mountains. They are continuous and tense. Cen Shen, a poet of the Tang Dynasty, had this poem: "I don't know who opened the mountain in the early days of creation. Two cliffs stand against the sky, and thousands of feet are cut from the ground."