不问不闻

Explanation: News: Listen. Do not ask do not listen. Described do not care about things, very cool 　　Usage: Joint type; as the predicate attribute; containing derogatory 　　Source: Qing Cao Xueqin's "Dream of Red Mansions" fourth back: "So that although the young widow Li Wan, and Gao Liang Fairview Home is among the Jingru 'Gaomusihui' in general, not and will not ask, do not smell, but know that paternity pro-adopted son." Thesaurus:  Cover Cong Semin, Cover out Saicong