《资治通鉴·晋纪·晋纪二十》
春季，正月，后赵大将军石闵想消除石氏的痕迹，以谶文中有 继赵李 的字样为托辞，便更改国号叫卫，改姓李氏，实行大赦，改年号为青龙。
春，正月，赵大将军闵欲灭去石氏之迹，托以谶文有 继赵李 ，更国号曰卫，易姓李氏，大赦，改元青龙。
In the spring, in the first month, Later Zhao's Grand General Shi Min wished to eliminate all traces of the Shi clan. Using the prophecy that contained the characters "to succeed Zhao, the Li" as his pretext, he changed the name of the state to Wei, changed his own family name to Li, carried out a general amnesty, and changed the era name to Qinglong.