《新唐书·列传·卷八十一》
命令调兵一万二千人驻守关东，皇帝亲自到望春楼誓师，接着犒劳出征的各位将领，酒到面前，神策军将士不敢喝。
诏移兵万二千戍关东，帝御望春楼誓师，因劳遣诸将。酒至神策，将士不敢饮。
He ordered 12,000 troops to be sent to Guandong, the emperor personally went to Wangchunlou to swear in the troops, and then rewarded the generals who were going on the expedition. When the wine was in front of them, the Jin Cejun soldiers and soldiers dared not drink it.