《太平广记·卷四百二十一·龙四》
赵齐嵩进退无路。第二天，他忽然听到雷声大作，才知道天要下雨。
赵子进退无路，坠之翌日，忽闻雷声殷殷，乃知天欲雨。
Zhao Qisong had no way of advancing or retreating. The next day, he suddenly heard a great sound of thunder and realized that it was going to rain.