He besieged Youzhou without taking it; in the sixth month the heat and rains forced him to withdraw. (History of Liao (Liaoshi) 遼史 卷1 神冊2年 4月)
The Jin prince attacks Liyang but is driven back by Liu Xun's defense after several days. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷269 제100단(TOC 이후 비공백 줄))
The Khitan, riding the momentum, surround Youzhou, and Lu Wenjin teaches them siege techniques. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷269 제105단(TOC 이후 비공백 줄))
Liu Yan declares himself emperor at Panyu, establishes the state of Da Yue and the era Qianheng, the origin of Southern Han. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷270 제7단(TOC 이후 비공백 줄))
The Khitan besiege Youzhou for nearly two hundred days; Li Siyuan and others assemble seventy thousand men at Yizhou. (Zizhi Tongjian (Comprehensive Mirror) 資治通鑑 卷270 제8단(TOC 이후 비공백 줄))