I am deeply involved in my work, and I long for warmth.
explain
Caution is treading on thin ice, getting up early and going to bed late, waiting on parents and keeping them warm in winter and cool in summer.
"Rejuvenation in spring" is the abbreviation of "sleepless night" and "warm in winter and warm in summer". "Su Xing" means getting up early and "going to bed at night" means going to bed late. This sentence comes from the Book of Songs? Daya？ Suppression ",the poem says:" A night's sleep, sweeping the court, Zhang Weimin ". The standard of staying up late in ancient times was that children should get up earlier than their parents and go to bed later than their parents. Children should get up before their parents get up in the morning; Parents sleep at night, only children can sleep. Greet your parents twice in the morning and evening.