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Empty words, Chinese idioms, Pinyin is f ú y ǔ x ū C í, meaning big words, empty words. It comes from the biography of kaixiao in the East View of Han Dynasty.
The origin of Idioms
"When I was ten years old in the army, I was more than one. I was tired of empty words."
Idiom usage
It refers to big talk and empty talk
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Take care of the old and care of the young - fù lǎo tí yòu
Take the world as one's duty - yǐ tiān xià wéi jǐ rèn
make big investment for small returns - suí zhū tán què