Couplets are pipa in the green gauze tent, and you dare not play them with your heart in spring. What are couplets?

Su Dongpo lost his wife in middle age and never married. On this day, his daughter-in-law, wearing a white gauze skirt as transparent as cicada wings, came to Su Dongpo with a teacup and whispered, "Dad, please have tea!" "

Su Dongpo looked at his daughter-in-law's pink face, graceful posture and affectionate eyes, and suddenly got a little carried away. Just when he was in high spirits, he suddenly remembered that this was his daughter-in-law blushing at once. Daughter-in-law asks: "Why does father-in-law blush?"

Su Dongpo did not answer. He picked up the teacup and quickly wrote two poems on the table with his index finger: "If there is a pipa in the green gauze account, it is spring." Because Su Dongpo was lazy and didn't clean the table for a long time, there was a thick layer of ash on the desktop, and the handwriting was very clear.

After reading it, the daughter-in-law quickly wrote two more sentences with her finger: "If the father-in-law plays a song, the fat water will not flow out of the field." After writing, I ran away with a red face.

Su Dongpo gloated when his son came back. Seeing his father so happy, he asked, "Father, what do you see?"

Su Dongpo got a fright. He quickly wiped the handwriting on the table with his sleeve and said, "I don't see anything." I am picking up dust. " From then on, whenever there is an affair between the old man and his wife, and between his sister-in-law and his brother-in-law, it is said to be collecting ashes. Is this the allusion?