《汉书·传·张陈王周传》
便驾着天子车马，到代邸迎接皇帝，报告说： 皇宫已清除过了。 
乃奉天子法驾，迎皇帝代邸，报曰： 宫谨除。 
He drove the emperor’s carriage and horses to the alternate palace to welcome the emperor, reporting: “The imperial palace has been cleared.”