birds of a feather flock together
The Chinese idiom, Pinyin is w ù y ǐ Q ú NF ē n, which means that the same kind of things come together, refers to the bad guys like each other, collude with each other, with "birds of a feather flock together". It comes from the book of changes.
The origin of Idioms
In the book of changes, the first part of the book of songs says, "like attracts like, like attracts like."
Idiom usage
As an object or attribute, it refers to the aggregation of things of the same kind. examples people gather by category, and birds of a feather flock together. Hou and Zhang's su line, this is "right Yang know", who does not know? The 73rd chapter of Xingshi Yinyuan Zhuan
birds of a feather flock together