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People who know the code know its usage at a glance. For example:
The river is not angry, tears and blood; (Du Fu: A photo of Cui, the third uncle secretary in the fifth row of Chenzhou)
The word "Weiyang" comes from a sentence in the Tang Dynasty in the Book of Songs: "I sent my uncle to Weiyang", so it was replaced by the word "uncle". Another example is:
Go to the neighboring city of Enbukuji early? Lu you
Turn into a butterfly Korean pillow and smell the chicken and whip;
The mountains are chaotic and vomit every day, and the water is far away;
Drowning is really a failure, and boarding the ship is also very lonely;
Peach blossoms should laugh at guests and have no worries about wine.
Among them, the word "become a butterfly" comes from Zhuangzi's theory that "the dream of Zhuang Zhou is a butterfly, vivid and self-explanatory! I don't know, Zhou Ye. If you suddenly feel it, you will suddenly feel it. I didn't know Zhou Zhimeng was a butterfly! Is Dream Butterfly Zhou Wei? " Later generations called it "become a butterfly" or "Dream Butterfly", which means "sleeping".
And the word "smell chicken" comes from the Book of Jin: "Sleep with Liu Kun and * *. When I heard the cock crow in the middle of the night, I thought it was not an unpleasant sound. Because of the sword dance. " It means early morning here.