《太平广记·卷三百二十·鬼五》
草丛里有几口古井，马都要踏着古井时，忽然出来一个老人举起拐杖打马，马一惊就躲开了，由于没有追上鹿，县令命令随从拉起弓来要射那老人，老人说：草丛里有井，怕你陷入井中我才打马。
马将趣之，忽见一翁，举杖击马。马惊避，不得及鹿。令奴引弓将射之，翁曰：此中有井，悲君堕耳。
There were several ancient wells hidden in the grass. When the magistrate’s horse was about to step on a well, an old man suddenly emerged and hit the horse with his cane. The startled horse dodged the well. As the magistrate failed to catch the deer, he ordered his entourage to pull out their bows and shoot the old man. The old man said, “There are wells hidden in the grass, I hit your horse because I was afraid you would fall into them.”