CDB library website, CDB learning network personal space, CDB homepage, official WeChat account of the National Open University Library. You can enter or find the National Open University Digital Library from the website of the National Open Library, the personal space of the National Open Learning Network, the homepage of the National Open University, and the official WeChat account of the National Open University Library. The National Open University Library was founded in September 1979, and its predecessor was the reference room of Central Radio and TV University. Since its establishment 30 years ago, the National Open University Library has been devoted to the construction of teaching resources and scientific research resources in open education.