Old History of the Five Dynasties: That night, Zhang Yanze, military governor of Xiangzhou, on Khitan orders, broke into the Fengqiu Gate with two…
That night, Zhang Yanze, military governor of Xiangzhou, on Khitan orders, broke into the Fengqiu Gate with two thousand vanguard troops.
是夜，相州節度使張彥澤受契丹命，率先鋒二千人，自封丘門斬關而入。
Location: 舊五代史 卷85
Zhang Yanze invaded the capital and killed Sang Weihan, Yin of Kaifeng.
壬申，張彥澤犯京師，殺開封尹桑維翰。
Location: 新五代史 卷09 開運3年12月
Zhang Yanze breaks the Fengqiumen and enters Daliang.
癸酉，未明，彥澤自封丘門斬關而入
Location: 資治通鑑 卷285 제71단(머리글 이후 비공백 줄 기준)