1 sentence

1. 古人认为，当下级发现上级有错时，应当直言规谏。

   gǔ​rén rèn​wéi, dāng xià​jí fā​xiàn shàng​jí yǒu cuò shí, yīng​dāng zhí​yán guī jiàn.

   Ancient people believed that when a subordinate finds a superior to be in error, they should offer direct admonition.

   Source: Dong Chinese Dictionary