keep one 's mouth shut
Pinyin is Qi á NK ǒ Uji ǎ OSH é, which means to shut up because of surprise or fear. It comes from Wang Chong's on the potential husband in Han Dynasty.
Idiom usage
In the event of great interests, they are at a loss to do anything about it.
The origin of Idioms
In Wang Chong's on the hidden man of the Han Dynasty, it is said that "the wise man is so tongue tied that he is silent."
Idiom explanation
Tongs: close the mouth; tongues: raise the tongue. It is used to describe the appearance of silence due to surprise or fear.
keep one 's mouth shut
The sky is high and the emperor is far away - tiān gāo huáng dì yuǎn