gǔ / dài / chéng / lǐ / shí / xíng / xún / gēng / xún / yè / de / rén / huì / qiāo / luó / bào / shí

古代城里实行巡更，巡夜的人会敲锣报时。

In ancient cities, night patrols marked the time by beating gongs.