衙

铁打的衙门，流水的官

tiě dǎ de yá men , liú shuǐ de guān

lit. the yamen is strong as iron, the officials flow like water (idiom)

总理衙门

zǒng lǐ yá men

the Qing dynasty equivalent of the Foreign Office

衙内

yá nèi

child of an official

衙役

yá yì

bailiff of feudal yamen

衙署

yá shǔ

government office in feudal China

衙门

yá men

yamen, government office in dynastic China