一个下雪的晚上。农村有户人家,半夜里有人敲门。主人好奇,这么晚了,又是大雪夜,会是谁呢?开了门,是一名迷了路的旅客。主人赶紧把他迎进屋内。屋主惊叹地说:“哎呀,你真幸运!你刚刚走过的路,其实是一片沼泽地,上面只有一层薄冰,这里的人,从来就不敢走过去。”旅客听后感到一片寒意,刚才若是踏破薄冰,不是早就深葬沼泽之地了吗?屋主继续说道:“前几天,同样是下着雪,一位邻居,被一群野狼追袭,同样的地方,邻居知道那里是一个结着冰的沼泽地,所以不敢跨跑过去,很不幸,他就死在野狼的嘴里。” A snowy night. Households in rural areas, people knock on the door in the middle of the night. Master curiosity, so late, it is snowy night, who will be? Open the door, is a lost traveler. The host hurried him in to the house. The owner said with astonishment: “Oh, you’re so lucky! The road you just walked was actually a wetland with only a thin layer of ice on it. People here never dared to walk.” Feel a chill, just if it is to break the thin ice, is not it a long time ago deep buried marshes? The owner continued: "A few days ago, the same is the snow, a neighbor, was a group of wolves followed, the same Local, neighbors know there is a frozen ice marsh, so afraid to cross the past, unfortunately, he died in the wolf’s mouth.