During the rule of Emperor Wu, Western Han reached the peak of its prosperity. This was the time when palace-style poetry took center stage. The term palace style was coined at the court of Xiao Gang, Emperor Jianwen of Liang. During his reign, Emperor Taizong established the Ministry of Literature and the Hall of Grand Letters. He also invited scholars to recite poetry. Famous court poets of this era were Yu Shinan, Ouyang Xu, Li Baiyao, Li Yifu and Shangguan Yi. In the reigns of the emperors Gaozong and Zhongzong and that of Empress Wu recitals of fu poems by both sovereigns and officials as entertainment at banquets were very much in vogue. Court literature represented the artistic tastes of the highest class of society in feudal China. These works had a tremendous influence in those days. Court literature did contribute something to the development of Chinese literature from the aspects of form and technique.