What is the stem of knocking on walnuts?

Knocking on walnuts describes cheating.

Knocking on walnuts comes from the novel "Drunk for Many Years", which is about the plot in the novel. Heroes knock walnuts at home, people they like date others outside, and then they are widely used by netizens, mostly to describe cheating.

Related introduction:

In Get Drunk, when Song Juhan tried to please him, he took his drunken friends back to the hotel, was photographed and sent to Song Juhan's group.

King Song Juhan stormed into the hotel angrily and asked why: "Do you know what I was doing when Otellini sent your photo to a group of more than 200 people?" He smiled and his eyes were red. "I'm knocking walnuts for you."

The tension of the scene description is tense, but it seems a bit funny because of knocking on walnuts. Everyone thinks of knocking on walnuts because of their simple and magical love for the king of heaven, which once became synonymous with the king of heaven.

Working background:

Shui Qiancheng's novel "Drunk for Many Years" tells the story of why engineers from teenagers to young people are associated with the big star Song Juhan. Song Juhan's family is superior. He was born with a golden key at an early age. His appearance level is very high and he has countless fans. Why is it one of them? Song Juhan's personality is somewhat capricious, which is related to the environment in which he grew up. The young master's character is somewhat selfish.

Song Juhan always knew why he was interested in himself, so after being with him, Song Juhan didn't care much about why, and still went his own way. Some people outside are not shy, and it is the only advantage to directly tell why people outside are not clean.

Two people should support each other and take care of each other for ten years, but it's a pity that Song Juhan loves himself more. He doesn't think much about why, but only knows how to satisfy his own selfish desires. On the one hand, I am confused with others outside, on the other hand, I am not allowed to be close to others for some reasons.