Diamond Sutra, nine years of Tang Xiantong, 868. This volume of Diamond Sutra consists of seven printed sheets, about 65,438+0.6 feet long, with dignified graphic style, clear printing ink and exquisite carving skills. It is by far the earliest printed matter with a definite printing date in the world. The Diamond Sutra is also called the earliest book in the world by the British Library. This sutra was originally stored in Dunhuang Grottoes 17 Tibetan Sutra Cave, and was cheated away by British Stan in 1907. It was collected in the British Museum in London, England, and is now in the British Library.