北鄙之音

Explanation: Yan Zhou refers to the time of music. Future generations as the voice of doom. Also as "the voice of the North vulgar." 　　Source: "Records of the Historian Fun Book": "Zhou was Chaoge rustic sound of the North, in his death the country Chaoge husband who died from time to time ... ... also, who defeated the North also, despise those who are humble, good music of Zhou, the nations with special hearts, princes are not attached, people are not pro side of the world, gold country death in his death. " Thesaurus:  Voice of the North rustic