Speaking of book collection, I'm afraid there is no place like Peking University except the National Library. As for those libraries that have invested a lot of money, you can brag, but don't take it seriously. Really good libraries are books accumulated from generation to generation, and many good books are simply not available. For example, Pu Songling's manuscript of Strange Tales from a Lonely Studio is in the Liaoning Provincial Library, which is the only one in the world, and no matter how much money it costs, it is impossible for other libraries to buy it. Hongwu Zheng Yun, which is collected in the library of Anhui Normal University, is also the only complete book in China.
In contrast, the libraries of national key universities have about 2 million volumes, and more than 3 million volumes are quite rich!
The library of Renmin University of China has a collection of 3.896 million volumes.
Tsinghua University Library has a total collection of about 3.96 million volumes (20 10).
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The collection of books is more or less just one aspect. The key is to make good use of these precious resources, apply what they have learned and benefit the society. This is the most important thing, otherwise no matter how many books are used, it can only be said that it is a waste of social resources!