2. Youzhou: One of the twelve ancient states, now Beijing. Youzhoutai: Huang Jintai, also known as Jibei Building, is located in Daxing District of Beijing today. It was built by Yan Zhaowang to recruit the world's wise men. Chen Ziang, a poet in the Tang Dynasty, suffered setbacks repeatedly, seeing his ambition to serve the country dashed, so he boarded the Jibei Tower and wrote poems such as You Zhou Tower and Seven Poems of Qiu Ji's Visit to the Ancient Lujushi.