old people in their seventi es or eighties ? 你看！ 便有婦人，也都是～，再不然，就是些七八歲的孩兒們。(《蕩寇志》七十一)Look! If there are women,they are the old people in their seventies or eighties. If not,there are some seven or eight-year-old children.
七老八十qi lao ba shi
late seventies and early eighties—a very old person