Yunnan province is rich in marble. Dali Cangshan 19 is famous for its hidden peaks, many varieties, beautiful colors and good texture. Because this kind of fine stone is abundant here, it has been spread all over the country for a long time, and it has been dubbed as the place name of Dali, as elegant as marble. Marble, also known as cornerstone, elm stone, aragonite, awakening stone and Zhu Kaishi, is generally divided into four categories: flower picking stone, dolomite, Shixiang stone and Blackstone. Marble was developed as early as the Tang Dynasty. Built in the Tang Dynasty, the Three Pagodas in Dali adopted exquisite marble handicrafts, such as stone screen for picking flowers, carved painting screen, stone table and bench, wine glass, desk lamp, pen container, inkstone, tea tray and fruit bowl, flowerpot and vase, landscape flowers and birds, people and animals, etc. The flower-picking stone screen with a diameter of 2 meters in the Yunnan Hall of the Great Hall of the People in Beijing naturally presents a magnificent picture of Cangshan's sea of clouds and rivers, which is amazing. The carved pedestal screen "Canger Grand View" displayed by the marble factory is carved with natural colored marble, and the silver Canger and romantic scenery are vivid and vivid, which is a rare treasure.