The first documentary of the "Chinese Architectural Heritage Trilogy" directed by Ju Anqi. It focuses on the conservation and revitalization of architectural heritage in Chinese metropolitan cities. Over the past two years, Ju Anqi has interviewed more than 80 internationally acclaimed architects, experts, scholars, and practitioners with successful experience in architectural revitalization. He filmed the current protection and revitalization of old Chinese buildings with an artistic style. With 300,000 words of interviews and 3000 hours of footage, Building is by far the largest visual record on the issue of architectural heritage conservation during the rapid urbanization in China.