Day and night
Day and night, Chinese idiom, Pinyin is zh ò UG ē ngy è s ò ng, which means to seize the time to study, study hard. From the biography of Cui Guang in the book of Wei.
Analysis of Idioms
They are eager to learn
The origin of Idioms
"Wei Shu · Cui Guang Zhuan" says: "the family is poor and eager to learn. They work day and night and recite books to support their parents."
Idiom usage
Combined; attributive; commendatory.
Day and night
to attack cities and capture territories - gōng chéng lüě dì
a superb collection of beautiful things - lín láng mǎn mù
There is no more sorrow than death - āi mò dà yú xīn sǐ