《太平广记·卷四百五十九·蛇四》
有个叫顾遂的郎中曾秘密地说，他的祖先曾经主管过公安县，辞官以后，就客居在公安县附近的荆江边了。
郎中顾遂尝密话，其先人尝宰公安，罢秩后，侨寄于县侧荆江之壖。
There was a doctor called Gu Sui who secretly said that his ancestors had once been in charge of Gong'an County, and after resigning as an official, they lived in Jingjiang, near Gong'an County.
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 郎中顾遂尝密话，其先人尝宰公安，罢秩后，侨寄于县侧荆江之壖。 [/INST] There was a doctor called Gu Sui who secretly said that his ancestors had once been in charge of Gong'an County, and after resigning as an official, they lived in Jingjiang, near Gong'an County.</s>
Identify the key themes in this Classical Chinese text and explain them in English: 郎中顾遂尝密话，其先人尝宰公安，罢秩后，侨寄于县侧荆江之壖。
user
There was a doctor called Gu Sui who secretly said that his ancestors had once been in charge of Gong'an County, and after resigning as an official, they lived in Jingjiang, near Gong'an County.
assistant