Source: Ming Hu Juren's "Self-Title": "If there is a constant, why do you sleep five times a night?" The most useless thing is to be frozen for ten days a day. "
Duo: Ancient night time unit, divided into five classes a night, with each class lasting about 2 hours.
Exposure (pù): exposure to the sun.
Cold: frozen.
Example: "If you are constant, why do you sleep at night and get up at five?" The most useless thing is to be frozen for ten days a day. "Reading, studying and scientific research all need perseverance. Xiao Wen and others, diligence, perseverance and modesty?
Extended data:
"Guiheng, why sleep more at night; The most useless thing is to be frozen for ten days a day. " It warns people that no matter what they do, they can persevere. If you can persist, you don't need to get up early and be busy every day. As long as you can persevere, you can gain a lot.
Example: Mao Zedong wrote a couplet when he was studying in Hunan No.1 Normal University: "You have perseverance, why do you get up at five in the middle of the night?" The most useless thing is to be frozen for ten days a day. "Clear reading should be persistent and step by step.