 The siege of Jin'an continued, and eventually, Zhang's deputy Yang Guangyuan killed Zhang and surrendered.With Zhang's army now under Khitan/Later Jin control, the joint Khitan/Later Jin army moved to engage Zhao's army, which effectively collapsed without a battle.Zhao Dejun and Zhao Yanshou (who had joined his father) surrendered to Emperor Taizong, leaving essentially no army to stop the Khitan/Later Jin advance toward Luoyang.