- 夜游神 yèyóushén night-patrolling deity(literary) a legendary guardian god who wanders and patrols at night
- 秉烛夜游 bǐngzhúyèyóu to have fun while one canto hold a candle and wander at night; making the most of one's time and enjoying life while one has the chance; an idiom originating from Li Bai's [[李|李|li3]] Chunye Yan Taoliyuan Xu [[春|春|chun1]]
- 夜游症 yèyóuzhèng sleepwalkingsomnambulism; a medical condition where a person gets up and moves about while remaining in a state of sleep
- 昼伏夜游 zhòufúyèyóu to hide by day and come out at nightTo stay hidden during the day and come out to move or act at night; describes animal habits or the behavior of thieves and fugitives