drop one's guard
MA BI Da Yi, a Chinese idiom, is pronounced m á B ì D à y ì, which means losing vigilance. It refers to carelessness, negligence, insensitivity to things and loss of vigilance. From the strong soldier.
Analysis of Idioms
[synonym] carelessness, carelessness and [antonym] concentration
The origin of Idioms
Ba Jin's strong fighter: "I should be careful, not careless, I should find a hidden place."
Idiom usage
It has a derogatory meaning and refers to carelessness.
drop one's guard
Return to good and turn back to evil - huán chún fǎn sù
promise with no intention of doing - yǒu kǒu wú xīn