Yang Guangyuan
In 936, Li Congke decided to test Shi's loyalty by moving (as Shi requested) him from Hedong to Tianping Circuit (天平, headquartered in modern Tai'an, Shandong). However, upon receiving the order, Shi rebelled. Li Congke commissioned the imperial general Zhang Jingda as the commander of the army against Shi, with Yang Guangyuan (i.e., Yang Tan, whose name had been changed by this point) as his deputy. As part of Later Tang's campaign plans, Zhao and Dong Wenqi () the military governor of Chengde were ordered to intercept Khitan forces that were anticipated to head south to aid Shi, but apparently, Zhao never launched his troops to do so, and the Khitan forces, under the direct command of Khitan's Emperor Taizong, were able to reach Hedong's capital Taiyuan without being intercepted. The joint Khitan/Hedong forces subsequently defeated Zhang's army and then surrounded it at Jin'an Fortress ().