串通一气

Explanation: Collusion: collusion. These cities: singing the same tune. Secretly colluded with each other and with 　　Usage: Verb-object type; as predicate; with pejorative for bad collusion 　　Source: Cao Xueqin, "Dream of Red Mansions" 46 back: "duck listened, then blushed and said: 'Strange Road, you complicit to calculating me!'" 　　Examples: Although they and the people a common gaming house ~, but I am afraid they abruptly the firing Judi ... ... (Qing Zhang Chunfan "officialdom," the second time)