A tight-lipped idiom.

Keep your mouth shut-be careful what you say and do

Keep one's mouth shut

Antisense is eloquence and boasting.

Interpretation seal: seal. Put three seals on his mouth. Describe speaking carefully. Now it is also used to describe being unwilling or afraid to speak.

The source of Shuo Wen jing yuan Shen: "Confucius lived in the ancestral temple, and there was a golden man in front of the son of heaven. He kept his mouth shut, but he said behind his back,' In ancient times, he warned people that he would quit, quit! If you don't talk much, you will lose much. " "

If the use case is dangerous, it will be embarrassing. The gold man gave a warning. (Chen's "Water Margin" thirteenth time)