What does it mean to have an affair?

It means an affair with an apricot, which describes spring as strong and full of interest. Later, it is a metaphor for women cheating and not keeping women's morals.

The origin of idioms:

The earliest source may be the story book "A Ghost in the Western Hills" in the Song Dynasty. Among them, women are described as "like twisting a green plum to see a handsome boy, like riding an apricot out of the wall." This sentence is about the love story of Pei and Li Qianjin regardless of ethics. According to this story, Bai Pu of the Yuan Dynasty also wrote the famous zaju "Up the Wall at once".

After the Yuan Dynasty, the usage of "having an affair with an almond" became more and more obvious. For example, "like almonds coming out of the wall, you can't break them and you can't teach people to be ashamed of flowers."

In modern times, the usage of "affair" has been fixed. Liu Yunruo of Yuanyang Butterfly School also wrote a famous book "The Story of an Apricot Out of the Wall".

Because of the special position of "Red Apricot" and "Wall Head" in ancient literature, "Red Apricot Out of the Wall" is usually only an implicit allegation, which implies that there is a reason for this derailment, "Chai Fei can't bloom for a long time" and "Spring scenery can't close the garden".

Apricot blossoms refer to spring, and then to romantic beauty, or not; The key problem is that this apricot flower always hooks up with the "wall". What is a "wall"? Look at the description of the ancients:

Su Shi's Butterfly Loves Flowers: Swing in the Wall, Road Outside the Wall. The layman in the wall, the beauty in the wall laughs. The laughter died away, and so did the sound. Affectionate but heartless chagrin.

Jiang Kui's youth journey: Yang's head, outside the pear wall, two people know what he is thinking.

Rong's "Looking at Apricot Flowers on the Road": A red branch is on the wall, and the layman is lonely on the wall.

Wu's "Apricot Blossoms on the Wall": Red apricots bloom in the west, and there are countless flowers on the partition wall.

Wang Song Anshi's Apricot Flowers: The unique apricot flowers are like inviting guests and counting red branches against the wall.

Wei Song's "Bodhisattva Man": Two or three rooms across the river, an affair.

Jin Yuanhao asked "Xinghua Miscellaneous Poems". There is a horizontal wall outside the apricot blossom wall, and the semi-palace is full of makeup.

Zhang Song Chen Liang's Occasionally: You can't hide the beautiful spring scenery, but the pink walls reveal the apricot blossom tips.

Immediately, it is the work of you: the willow does not cover the spring scenery, and an apricot goes out of the wall.

Lu You's Hairpin Phoenix: red crisp hands, yellow wine, and spring willows in the city.