《旧五代史·后唐·皇纪上》
乾符六年春，朝廷任昭义节度使李钧兼北面招讨使，率上党、太原的部队经过石岭关，驻扎在代州，和幽州李可举会合赫连铎一同攻蔚州。
乾符六年春，朝廷以昭义节度使李钧充北面招讨使，将上党、太原之师过石岭关，屯于代州，与幽州李可举会赫连铎同攻蔚州。
In the spring of the sixth year of Qianfu, the imperial court appointed Li Jun, the Jiedushi of Zhaoyi, as the Zhaotou Envoy for the Northern Region, leading the troops from Shangdang and Taiyuan to pass through the Shiling Pass, stationed in Daizhou, and joined forces with Helian Duo in Youzhou to attack Wei Prefecture.