Li Siyuan
In 924, when Khitan forces made an incursion into Later Tang territory and attacked You Prefecture (幽州, in modern Beijing), Emperor Zhuangzong sent Li Siyuan north to relieve You Prefecture and to repel the attack, with Huo serving as his deputy. It was said that because of this opportunity to serve under Li Siyuan, and because Li Siyuan liked Huo's personality, they became friends. Shortly after, Emperor Zhuangzong bestowed on Huo the imperial surname of Li and gave him a new name of Shaozhen. Later in the year, after he served under Li Siyuan in quelling a mutiny at Lu Prefecture (潞州, in modern Changzhi, Shanxi), he was made the military governor of Wuning Circuit (武寧, headquartered in modern Xuzhou, Jiangsu).