- 十一月 shíyīyuè NovemberNovember; the eleventh month of the lunar year
- 十一月份 shíyīyuèfèn Novemberthe eleventh month of the year; November
- 不管三七二十一 bùguǎnsānqī'èrshíyī regardless of the consequencesrecklessly; without considering the situation or the outcome.
- 二十一点 èrshíyīdiǎn blackjackA card game where players try to get as close as possible to a total of twenty-one points without going over.
- 三七二十一 sānqī'èrshíyī whatever it isthe true story of a matter; the actual situation; the facts of the case
- 三十一 sānshíyī thirty-onethe number thirty-one
- 六十一 liùshíyī sixty-onethe number sixty-one; 61
- 管他三七二十一 guǎntāsānqī'èrshíyī no matter whatto ignore everything and just do something; regardless of the consequences; who cares
- 三一三十一 sānyīsānshíyī to divide into three equal partsTo divide something into three equal parts; by extension, to share or split something fairly among several people.
- 黄帝八十一难经 huángdìbāshíyīnànjīng The Yellow Emperor's Classic of Eighty-one DifficultiesThe Yellow Emperor's Classic of Eighty-one Difficulties; a classic Chinese medical text from approximately the 1st century AD
- 九十一 jiǔshíyī ninety-onethe number ninety-one
- 二十一世纪 èrshíyīshìjì 21st centurythe twenty-first century
- 二十一条 èrshíyītiáo Twenty-One DemandsThe list of demands presented by the Japanese Empire to the government of the Republic of China in 1915, which aimed to greatly expand Japanese control over Chinese economy and politics.
- 八十一分律 bāshíyīfēnlǜ 81-part systemalternate name for the Taichu calendar of the Han Dynasty, so named because it divided one day into eighty-one units
- 十一号 shíyīhào shank's mareA humorous way to refer to one's own legs as a mode of transport, comparing the two legs to the number eleven
- 十一路 shíyīlù going on foot(colloquial) to walk instead of taking a bus or vehicle; using one's own two legs.
- 双十一 shuāngshíyī Singles' DayNovember 11, a holiday for single people that has become the world's largest annual online shopping event.
