The gummy teeth and the tongue
Pinyin is y í NCH à D à NSH é, which means swearing. From yehuo Bian · women · Yanji.
The origin of Idioms
According to Shen De Fu's yehuo Bian · women · Yanji of the Ming Dynasty, "if you are dissatisfied with your salary, you will be fierce."
Idiom usage
To swear at; denounce
The gummy teeth and the tongue
They don't attach importance to each other - jū bù chóng xí
consider everyone beneath one 's notice - mù kōng yú zǐ