蜗角之争

Explanation: Compared to very small things and cause a huge dispute. 　　Usage: Partial official; as object; containing derogatory 　　Source: "Zhuangzi the sun" has the left corner of the country and the snail who said touch's have the right corner of the country and the snail who said Man's, when the phase competing for the war, tens of thousands of volts dead, by the north, ten days, five Day then counter. " Thesaurus:  Wojiao battle, wozheng