10 million pages, 1 billion characters, 150 thousand volumes,
12,000 ancient books, 4,500 books of full text
The most numerous rare books, only copies extant, various versions worldwide
Collected from libraries, museums, archives, private rare editions.
More than 8,000 titles of general chronicles of provinces, prefectures,municipalities, counties.
More than 3,700 titles of national chronicles, local records of 30 provinces/municipalities,and various geography, chorography, topology of special subjects, including mountains/waters, water conservancy, famous scenery, ancestral temples, gardens/forests, races, borderlands, travel notes, extra-regional states.