The library on the east side is the largest, with a total construction area of 22,000 square meters. The total book collection is about 1.1 million volumes, with 2,100 reading seats. The open-shelf book storage in the library is integrated with the reading area in order to provide the functions of "collection, search, borrowing and reading".

In this project, economics is aesthetics; abandon trivial and complicated decorations to optimize cost and precise design. Interior design follows the principle of systematic design, and extends based on the logic of architectural design. The sunlight in Zhangjiakou is strong and the architecture facade is covered with the perforated curtain wall, which makes the indoor light less suitable for reading. 

The designer artfully placed that area as a promenade with a stage effect,and placed the reading area inward. The constantly changing light became a spotlight, illuminating the unknown world of readers. The establishing of spiritual civilization is inseparable from cultural genes.The library expand the dimensions of people's artistic and literary life, and shape the in-depth experiences of interactions between human and architecture during the decades. 

A public library support people's spiritual breathing as the lung of city, and heal people of different ages. The library is equipped with a modern intelligent management system to maintain public order and safety at the entrance and exit, and also provide self-service storage, certificate application, system retrieval and LED screen with rolling information. The convenience of high technology allows people to effortlessly obtain the information they need. In addition to specific functional areas, some areas are reserved for other possibilities in future. The transparency of the architectural material ensures the possibilities of various activities; It reshapes the expression of the space through the opening and closing of the wall. 

The modular composition allows the space to be flexibly transformed into a gallery, concert hall, recording studio, event area, etc. Various activities based on history and culture are staged here. There is a private museum in the library, which displays the historical documents of Zhangjiakou. It gives a close look of history of thousands of years through the small window. It conveys the proper posture of a public building smoothly and accurately without extra visual symbols and image features. 

Zhangjiakou became an international meeting point during the upcoming Winter Olympics through the cultural communication. It is like a seed that transmits civilization, giving enlightenment to people in modern time. The "architecture of books" is constantly developing and upgrading. It represents the never-ending spiritual construction of people and their cities, although it may not lead to absolute genuine knowledge.