《太平广记·卷一百三十七·征应三》
于是他吃惊地醒了，环视四周，却不见有人。天还没亮，他感到非常奇怪，就又睡了。
即惊觉，顾不见人，天尚黑，意甚怪之。
He then woke up in surprise and looked around but he could not find anyone there. It was not yet dawn and he felt very strange so he went back to sleep.