1966年于韩国庆州长佛国释迦塔内发现一印本《无垢净光大陀罗尼经》，经文为汉字，且有武周制字，经中外学者考证，为武周后期（690-705）中国洛阳刻印。     In 1966,a copy of the Dharani Spotless Pure Light was recovered from the Sokka Pagogda in Pulguk-sa Monastery in Kyongiu, Korea, This sutra was writen in Chinese and some of the characters were of the Wu-Zhou Dynatsy. Chinese and foreing scholars have determined that it was engraved and printed in Luoyang, China, during the latter part of the reign of Empress Wu Zetian(690-705).