《辽史·列传·卷八》
适逢周主柴荣因病收兵，思温退兵至益津，假称不知周军在何处。
会周主荣以病归，思温退至益津，伪言不知所在。
As it happened, Zhou’s Lord Chai Rong withdrew his troops because of his illness, and Siwen retreated to Yijin, pretending not to know the whereabouts of the Zhou army.