take mean advantage of someone when he is down
It's a Chinese idiom. Pinyin is Xi à J à NGT ó ush í, which means that when someone falls into a well, instead of rescuing him, he throws a stone into the well. It comes from Li Baojia's officialdom in the Qing Dynasty.
The origin of Idioms
The twelfth chapter of Li Baojia's officialdom in the Qing Dynasty: "as soon as he saw that his family members were much worse than before, he knew that some of them must have fallen into the well to speak ill of him."
Idiom usage
It is used as predicate and attributive.
Examples
If he refuses to go down the well and throw a stone, it is meant to be fairplay. Lin Yutang's the style of inserting Analects: steadiness, swearing and fairplay
Analysis of Idioms
A synonym: drop a stone into a well
Antonym: charity, charity
take mean advantage of someone when he is down
abuses swept away and the air cleared - bì jué fēng qīng
a sad and sentimental tender and romantic sentiments - chán mián fěi cè
have an affectionate concern for each other - sòng nuǎn wēi hán