《旧五代史·后汉·隐帝纪下》
此前，契丹人侵入深州边境，史万山守卫州城，郭威派索万进领骑兵七百屯驻深州。
先是，契丹入边，万山城守，郭威遣索万进率骑七百屯深州。
Previously, the Khitan invaded the Shenzhou border. Shi Wanshan defended the city, and Guo Wei sent Suo Wanjin to lead 700 cavalrymen to garrison Shenzhou.