Nirvana in Fire Episode 11

Although it is revealed that Prince Ji, the Emperor's little brother, is a witness of the murder case, Prince Yu is determined to save He Wenxin's life for He Jingzhong's sake. Xie Yu and Crown Prince Xian has Minister Chen Yuan Zhi, the minister of Rites, convince the emperor to reinstate Concubine Yue to her original position, as her demotion apparently causes problems with the New Year ceremony protocols. The emperor acquiesces, and prepares to reinstate her. However, Mei Changsu finds a flaw in the minister's argument, and arranges for Prince Yu to hold a court debate. Mei then sends Mu Qing out to retrieve Master Zhou, a past minister of Rites, who helps Yu win the debate. Prince Jing finally tells his mother that he would join the fight for the crown. (Source: Wikipedia)