去嘉裕关旅游时,游人们常常会忽略一个意味深长的现象,这就是“燕鸣城墙”。即:每当游人以石击城,关内的城墙总能发出燕子鸣叫的啾啾声。“啾啾——”“啾啾——”“啾啾——”细听听,再细品品,特别悲凉。那么,是不是嘉裕关的每一段城墙皆有此功能呢?答曰:不是,只有在特定的地 To Jiayuguan tourism, tourists often overlook a meaningful phenomenon, which is “Yanming City Wall.” That is: Whenever tourists visit the city with stone walls, the city walls inside can always emit tweeted tweets. “Tweeted -” “Tweeted -” “Tweeted -” Listen carefully, and then fine products, particularly sad. So, is not every section of Jiayuguan walls have this feature? Answer: No, only in a specific