1, China Knowledge Network (CNKI), an online publishing platform co-founded by China academic journal (CD-ROM version) e-magazine and Tongfang Knowledge Network (Beijing) Technology Co., Ltd., is the largest knowledge portal in the world.

2. Superstar e-book library is the largest online Chinese library in the world, with books covering various disciplines, which provides a lot of valuable reference materials for the teaching and work of universities and scientific research institutions, and is also a good assistant for students' study and entertainment.

Superstar e-book database

3. China Basic Ancient Books Database (Love as Life) * * * contains more than 60,000 kinds of ancient books 165438 BC to the beginning of the 20th century AD. Each ancient book provides 1 popular version of the full text and 1-2 important versions of the pictures, with a total text of 1 0.7 billion words,10.2 million versions and110,000 pages of pictures, with a data volume of about 320G g, and its collection covers all the history and culture of China.

Peking University magic weapon website page

4. Peking University Magic Weapon is the earliest and most professional legal database in China. 1985 was founded in Peking University. At present, it covers China laws and regulations, judicial cases, law journals, English translation and special reference, with a total data of over 1 10,000.

5. The legal database website developed and maintained by the Institute of Positive Law of Peking University Law School aims to provide professional and systematic legal information services. At present, the world's largest Chinese legal database has been built. Among them, the total number of cases included in the case database exceeded 250,000, and the total number of normative documents included in the supervision database was nearly 400,000.