#TopicOfTheDay The #DiamondSutra, printed in #China in 868 CE using woodblock printing, is the #Oldest known printed book still in existence. This significant Buddhist text, discovered in the Dunhuang caves, offers invaluable insights into early printing technology and Buddhist philosophy.#WorldBookAndCopyrightDayhttps://knowledgezone.co.in/kbits/6807b42dc42fff1aab8f7ccf