仇士良
In spring 840, Emperor Wenzong grew seriously ill, and he had Yang Sifu and Li Jue summoned to the palace, intending to entrust Li Chengmei to them. However, the powerful eunuchs Qiu Shiliang and Yu Hongzhi (魚弘志), who had no input in Li Chengmei's being made crown prince, opposed Li Chengmei. They forged an edict in Emperor Wenzong's name deposing Li Chengmei (on the excuse that Li Chengmei was too young) and naming another younger brother of Emperor Wenzong's, Li Chan the Prince of Ying, crown prince. After Emperor Wenzong died soon thereafter, Qiu persuaded Li Chan, then still carrying the title of Crown Prince, to issue an order that Consort Yang, Li Rong, and Li Chengmei commit suicide.