《左传·襄公·襄公三十年》
鸟在亳社上鸣叫，声音好像在说： 嘻嘻。 
鸟鸣于亳社，如曰： 譆譆。 甲午，宋大灾。
The birds called in亳社, sounding as if they were saying, “Hee hee.”
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 鸟鸣于亳社，如曰： 譆譆。 甲午，宋大灾。 [/INST] The birds called in亳社, sounding as if they were saying, “Hee hee.”</s>
Identify the key themes in this Classical Chinese text and explain them in English: 鸟鸣于亳社，如曰： 譆譆。 甲午，宋大灾。
user
The birds called in亳社, sounding as if they were saying, “Hee hee.”
assistant