- 七老八十 qīlǎobāshí elderlyin one's seventies or eighties; of an advanced age
- 八十八 bāshíbā eighty-eightthe number eighty-eight
- 一百八十 yībǎibāshí one hundred eightythe number 180
- 八十一 bāshíyī eighty-onethe number eighty-one
- 百儿八十 bǎi'érbāshí hundredabout a hundred; a hundred or so
- 八十天环游地球 Bāshí Tiān Huányóu Dìqiú Around the World in 80 DaysAround the World in Eighty Days by Jules Verne
- 八十年代 bāshíniándài the eightiesthe decade spanning from 1980 to 1989
- 黄帝八十一难经 Huángdì Bāshíyī Nànjīng Classic of DifficultiesThe Yellow Emperor's Classic of Eighty-one Difficulties, a foundational Chinese medical text dating from approximately the 1st century AD