What do you mean by picking up ashes?

Picking up ashes, also known as climbing ashes, is a word to describe incest, especially the incest behavior of father-in-law and daughter-in-law having sexual relations. There are many stories and legends about the origin of the word "collecting ashes". Personally, what is more interesting is about Wang Anshi. The story tells that once Wang Anshi passed by his daughter-in-law's room and saw her sleeping in a bed covered with transparent gauze curtains, her eyes lit up. After all, Wang Anshi is a poet, so he wrote a sentence on the dusty wall: "There is a pipa in the satin account, and I want to play it." After writing, hide aside and observe the daughter-in-law's movements. Seeing her father-in-law sneaking around outside, the daughter-in-law came out to see what his father-in-law had written on the wall. As soon as she saw his father-in-law leave such a message, she immediately understood what it meant, so she added, "I want to borrow my father-in-law to play a song, especially to leave Feng Shui at my house." Wang Anshi was secretly happy when he saw his daughter-in-law's words. I didn't expect my son to appear at this time, so he quickly wiped the handwriting off the wall with his sleeve. The son was surprised and asked his father what he was doing. Wang Anshi said he was collecting ashes. Another expert said that the word "picking up ashes" was not from Wang Anshi, but from Mr. Su Dongpo, a college student, but the story was similar.

After Su Dongpo lost his wife in his prime, his career was not smooth and he was once decadent. He stayed at home, took no care of anything, was proud of calligraphy and poetry, stopped playing, or even went into the study for a few days. His son has no father's demeanor, idles around and often doesn't go home. However, she married a beautiful little girl and often talked with Su Dongpo in poetry. Therefore, the relationship between Weng and his daughter-in-law is closer than that between father and son.

At noon one day, Su Dongpo was bored after drinking, so he went to the study and took a nap on his desk. A thin layer of dust fell on the table because it had not been cleaned for many days. Just as Su Dongpo was bored, his daughter-in-law wore a light green skirt and brought him tea with a teapot and teacups. Su Dongpo was in high spirits when he saw his wife's charming figure and youthful and beautiful dress. Touching the water with his hand, he wrote on the table: "There is a pipa in the green gauze tent. Although there are springs, I dare not play it." When his daughter-in-law saw it, although her face was feverish, it was not without ridicule. She also dipped her hand into the water and wrote, "Why not play a song, and the rich water will not flow out of the field?" I was flirting with my wife. In the charming atmosphere, Su Dongpo's son rushed to the study to visit his father. Su Dongpo was worried that his son would see the mystery on the desk, so he brushed off his robe sleeve and wiped away his handwriting. His son was puzzled by Su Dongpo's behavior and asked, "Father, what are you doing?" ? Su Dongpo replied: "I am picking up ash!"