《太平广记·卷三百五十四·鬼三十》
从门缝往外看，只见都是穿着黑色布衣的兵，都没有穿盔甲，起初都以为是州里的兵在偷偷地缉捕盗贼。
自门隙觇之，则皆青衣兵士而无甲胄。
They peeped out through the cracks in the door and saw that the soldiers were all dressed in black and wore no armor. At first, they all thought they were the local troops secretly hunting down rebels.