A copy of Shi Liuqiu Lu(Log of the Mission to the Ryukyu Islands). [Photo by Yang Yang/China Daily]

　　In the copy of Shi Liuqiu Lu(Log of the Mission to the Ryukyu Islands) from the Ming Dynasty is included an early official record documenting the Diaoyu Islands.

　　On the third floor of Wenhan Ge is the Light of Truth: Classic Archives Exhibition of Marxism Localization and Modernization in China, which presents more than 2,000 copies of classic books and objects that are grouped into four parts.

　　The exhibition shows the classic books by Karl Marx and Vladimir Lenin, including the first volume of the German-language Das Kapital published in 1867, whose first print run was only 1,000 copies, and more than 300 versions of The Communist Manifesto in many different languages, and the multilingual, multivolume Xi Jinping: The Governance of China.

　　To store these precious publication resources, the China National Archives of Publications and Culture has built a library cave in China that meets the corresponding requirements of temperature and humidity, as well as green architecture.

　　In the No 1 library of Lantai Cave are the woodblocks used to print Tripitaka, three collections of Buddhist canon of scriptures, in the Han, Tibetan, Mongolian and Manchu ethnic languages, which are made of first-class pear wood and red birch. They have lasted hundreds of years.

　　In the No 2 library is an authentic version of Siku Quanshu(The Compilation of the Complete Library in Four Branches of Literature), as well as the replicas of photocopied versions.