唐明宗
Li Cunxu was killed in a mutiny in 926, and his adoptive brother Li Siyuan became emperor. After Li Siyuan became emperor, Liu Xu was made a "Zhongshu Sheren" (), a mid-level official at the legislative bureau of government (中書省, "Zhongshu Sheng"); he later also assumed the posts of deputy minister of census (戶部侍郎, "Hubu Shilang") and scholar at Duanming Hall (). It was said that Li Siyuan respected him for his gracefulness and favored him for his mild disposition.