唐明宗
In 926, Li Cunxu was killed in a mutiny at then-Later Tang capital Luoyang. Li Siyuan, who had earlier rebelled against Li Cunxu, quickly arrived at Luoyang thereafter and claimed imperial title. Sometime after Li Siyuan took the throne, he made Feng Yun a protocol officer (中門使, "Zhongmenshi") and director of palace affairs (宣徽使, "Xuanhuishi").