zài / gǔ / dài / chén / zǐ / bì / xū / yǐ / qián / kè / de / tài / dù / shì / fèng / jūn / zhǔ

在古代，臣子必须以虔恪的态度侍奉君主。

In ancient times, officials had to serve the ruler with respectful devotion.