The Capital Library, designed by Beijing Architectural Design and Research Institute, is a comprehensive large-scale public library in Beijing. Located in the southeast of Warwick Bridge in Chaoyang District, with a building area of 37,000 square meters and a height of 49 meters. There are 8 floors above the ground, 17 reading rooms, 1000 reading seats, and a designed collection of 4 million books. The architectural modeling of the Capital Library draws lessons from the traditional culture of China and has new connotations. Its plane adopts a fan shape of 1/4, which surrounds the central square and forms a strong cohesive force. The facade is like a long scroll, and the center of the facade is a huge arch, which has a visual impact.