There is a fish in the house
As a Chinese idiom, Pinyin is j í B ī NY ǒ uy ú, meaning to treat someone else's fish. It refers to taking the opportunity to cultivate private power. From the book of changes report.
The origin of Idioms
"Zhouyi · Gu" says, "if you have fish in your bag, it means less than the guest." Kong yingdashu: "words have other people's things, and the object of righteousness can not be reached."
Idiom usage
It means to cultivate private power, not to bring up criminals and traitors. Xu Sanjie's Jie Xia Ji Du Mei in Ming Dynasty
There is a fish in the house
be unable to sit down or sleep at ease - zuò wò bù níng
not to change one 's voice and expression because of emotion - bù dòng shēng sè
scholar , farmer , artisan and merchant - shì nóng gōng shāng
he can size up people by his simple devices and is so alive to the changes about him that he proves to be a good commentator on the current situation - zhī rén lùn shì