Question: What is the date of death of Xu Zhixun (Elder)'s father?
Sentence (from "Xu Wen"): Xu Wen (徐溫) (862 – November 20, 927), courtesy name Dunmei (敦美), formally Prince Zhongwu of Qi (齊忠武王), later further posthumously honored Emperor Wu (武皇帝) with the temple name Yizu (義祖) by his adoptive son Xu Zhigao after Xu Zhigao founded the state of Southern Tang, was a major general and regent of the Chinese Five Dynasties and Ten Kingdoms period state Wu.
Relevant evidence: Yes