A character disguised as a eunuch makes the mistake of asking other eunuchs for 'scissors' to 'cut' a piece of cloth. The eunuchs respond with horror. "Do you not know that there are some things you must not speak of to eunuchs?"
Profanity
Mild
In the Viki English translation, the word 'bastard' is used several times in one scene for dramatic effect.
In addition, 'bastard' is used as a mere slur (no dramatic effect; it feels very unnecessary, unfortunately.)