Li Keyong
Upon hearing of Li Keyong's mutiny, Li Guochang, then still the military governor of Zhenwu, initially submitted a petition to Emperor Xizong proclaiming his loyalty and asking Emperor Xizong to commission another defender of Datong—going as far as stating that if Li Keyong refused, he would be willing to attack Li Keyong himself. Instead, the imperial government requested that Li Guochang write a letter to Li Keyong to promptly receive the newly imperially commissioned defender, Lu Jianfang (盧簡方). Believing that Li Keyong would nevertheless reject Lu, however, the imperial government changed tactics and named Li Guochang the new military governor of Datong, believing that Li Keyong would not resist his father.