gǔ / dài / guān / yuán / chū / shì / yìn / xìn / zhèng / míng / zì / jǐ / shì / cháo / tíng / pài / lái / de / shǐ / zhě

古代官员出示印信，证明自己是朝廷派来的使者。

In ancient times, officials showed their seals to prove that they were envoys sent by the court.