不瞽不聋

Explanation: Means not pretending to dementia, is not dumb, we can not be good grandmothers and grandfathers. Great to be generous to describe older 　　Source: Phrase from the "Tai Ping Yu Lan" volume IV ninety-six cited "cautious child" Yat Man: "saying: do not Cong unknown, can not be king; not blind not deaf, can not for the public." Thesaurus:  pretend to be ignorant of