劉知遠
While Liu Zhiyuan was on the campaign against Du, his oldest son Liu Chengxun (), who was said to be kind, faithful, gentle, and capable, died. It was said that the people were saddened by Liu Chengxun's passing. Liu Zhiyuan himself was greatly saddened, and it caused him to begin to be ill. By spring 948, he was extremely ill. He entrusted his younger son Liu Chengyou to Su Fengji, Yang Bin, Shi Hongzhao, and Guo Wei, stating, "My remaining breaths are getting short, and I cannot speak much. Chengyou is young and weak, so what happens after my death has to be entrusted to you." He also told them to guard against Du Chongwei. After Liu Zhiyuan died the same day, these officials, without announcing his death, had Du and his sons put to death. Liu Chengyou was created the Prince of Zhou, and shortly after, when Liu Zhiyuan's death was announced, Liu Chengyou succeeded him as emperor.