| 1 | 昼夜 | 晝夜 | zhòu yè | zhou4 ye4 | day and night; period of 24 hours; continuously, without stop | | |
| 2 | 昼 | 晝 | zhòu | zhou4 | daytime | | |
| 3 | 昼长夜短 | 晝長夜短 | zhòu cháng yè duǎn | zhou4 chang2 ye4 duan3 | (In summer) the days are long and the nights short. (idiom) | | |
| 4 | 昼短夜长 | 晝短夜長 | zhòu duǎn yè cháng | zhou4 duan3 ye4 chang2 | the winter days are short and the nights long (idiom) | | |
| 5 | 昼伏夜出 | 晝伏夜出 | zhòu fú yè chū | zhou4 fu2 ye4 chu1 | nocturnal; to hide by day and come out at night | | |
| 6 | 昼警暮巡 | 晝警暮巡 | zhòu jǐng mù xún | zhou4 jing3 mu4 xun2 | to be on the alert round the clock (idiom) | | |
| 7 | 昼寝废时 | 晝寢廢時 | zhòu qǐn fèi shí | zhou4 qin3 fei4 shi2 | to sleep in the day and keep irregular hours (idiom) | | |
| 8 | 昼行夜宿 | 晝行夜宿 | zhòu xíng yè sù | zhou4 xing2 ye4 su4 | to travel by day and rest by night (idiom) | | |
| 9 | 昼夜不息 | 晝夜不息 | zhòu yè bù xī | zhou4 ye4 bu4 xi1 | day and night without rest (idiom) | | |
| 10 | 昼夜节律 | 晝夜節律 | zhòu yè jié lǜ | zhou4 ye4 jie2 lu:4 | circadian rhythm | | |
| 11 | 昼夜平分点 | 晝夜平分點 | zhòu yè píng fēn diǎn | zhou4 ye4 ping2 fen1 dian3 | the equinox | | |