a verbal statement without any proof
In Chinese, Pinyin is k ō NGK ǒ UW ú P í ng, which means to speak only by mouth without any evidence, as long as it is proved in kind. It's from officialdom.
The origin of Idioms
The 27th chapter of Li Baojia's Officialdom appearance in Qing Dynasty: "students dare not speak to their teachers even if they have nothing to say."
Analysis of Idioms
[synonym] empty talk without evidence, without evidence without evidence
Idiom usage
As an object or attributive, it refers to the empty spoken language without evidence. I can't believe what you said.
Chinese PinYin : kōng kǒu wú píng
a verbal statement without any proof
incomplete parts of ancient scripts. yí biān duàn jiǎn
besiege a city to annihilate the enemy reinforce. wéi chéng dǎ yuán
thrice filled up and thrice emptied. sān yíng sān xū
nourish the living and bury the dead -- do one 's duty. sòng wǎng shì jū
be soaked in a dark liquid without becoming back. niè ér bù zī
retire and give room to better men. bì ràng xián lù
be as everlasting as the sun and the moon. rì yuè jīng tiān
give a dog a bad name and hang him. fèng cí fá zuì