《太平广记·卷四百·宝一》
赵怀正夜晚枕着石枕睡觉时，感觉到枕中好象有风雨声。于是让妻子和儿子各枕一晚，他们都没什么感觉，赵怀正枕着又有原来声音，有时喧闹声让他心跳而睡不着觉。
赵夜枕之，觉枕中如风雨声，因令妻及子各枕一夕，则无所觉。赵枕辄复旧，或喧悸不得眠。
When sleeping on the stone pillow at night, Zhao Huai zheng felt like there was the sound of wind and rain in the pillow. So he asked his wife and son to sleep on it. But they didn't feel anything. When Zhao Huai zheng slept on it, he heard the same sound again. Sometimes the noise made his heart beat fast and he couldn't fall asleep.