Сыку цюаньшу
The Qianlong Emperor of the Qing dynasty visited Tianyi Ge, and ordered officials to draw schematics of Tianyi Ge's building plan and book cases as prototype to build several imperial libraries including Wenyuan Ge in the Forbidden City, and Wenjin Ge in the Chengde Mountain Resort to house the "Siku Quanshu" encyclopedia.