Write and speak
Bi FA Kou Zhu is a Chinese idiom, Pinyin is B ǐ f á K ǒ UZH ū, which means to expose and denounce bad people and bad things orally and in writing.
Idiom explanation
To denounce or attack; to denounce or punish. Expose and denounce bad people and bad things orally and in writing.
The origin of Idioms
Wang Tingna of the Ming Dynasty wrote in his three wishes: he donated honesty and gave up shame. He coveted the wealth of power. He didn't know that verbal criticism was a poet's sentence, and he was ashamed to know others on the ridge. but we are not afraid of strong defense, we are not afraid of axe and Tomahawk. Preface to officialdom
usage
To expose bad people and bad things
Write and speak
bare one 's heart in all sincerity - pōu gān qì xuè
not even a blade of grass grows - cùn cǎo bù shēng