The predecessor of the Russian National Library is the Soviet National Library. Its predecessor was the library of Lumiyantsev Museum in Moscow, which was built in 1862. 1925 was renamed Lenin Library in February. This museum is the collection center of various publications and foreign documents in China. There are more than 35 million books (pieces) in 247 languages (9 1 language in China and 0/56 languages in foreign languages), making it the largest library in the world (foreign literature accounts for 40%). There are a large number of precious documents in the collection, such as manuscripts of famous scholars and writers from the 6 th to the 20 th century; The earliest printed documents in Russian and Slavic languages; 15 to 18 century domestic and foreign ancient books; The original works of Marx, Engels and Lenin and the original works of world cultural celebrities. The whole library has 40 departments, including domestic interview and domestic exchange department, foreign language interview and international exchange department, cataloging and letter cataloging department, information center on cultural and artistic issues, reproduction department, liaison department of foreign library science and international library circles, map department, music department, military book department, reader service department, lending department, publishing department, research department on theory and method of reader service, research department on theory and method of book collection organization and utilization, and coordination department of scientific research and method work. The library has established book exchange relations with more than 3,500 institutions in 102 countries in the world, and has 18 reading rooms with 2,334 seats, receiving 8,000 ~10000 readers every day.