Introduction to knives: Whether it is the stone pointed tool from the Paleolithic Age, the earliest sliding door scene at the Dragon Carving Stele site, or the Warring States Dragon and Snake petals unearthed in 2002 from the cemetery of high-ranking Chu nobles in Jiuliandun, Zaoyang. Lacquer beans, Deng Gongmu Gui from the late Western Zhou Dynasty, picture bricks from the Jin and Jin Dynasties, gate towers from Song tombs, and official seals from the Yuan and Ming Dynasties all fully illustrate the ancient history of Xiangyang.