What joke did granny Liu tell in a dream of red mansions?

One of the funniest sentences is "Lao Liu, Lao Liu, eat like an ox and eat an old sow without looking up."

Original text:

I saw a daughter-in-law standing there with a box, and a maid came up and opened the lid, which contained two bowls of vegetables. Li Wan took a bowl and put it on Granny Liu's desk. Xi-feng picked a bowl of pigeon eggs and put it on Mrs. Liu's desk. Grandma Liu stood up and said loudly, "Lao Liu, Lao Liu, you eat like an ox, and you don't even look up when you eat an old sow." Laughing up and down. Shi Xiangyun couldn't hold on, and a mouthful of rice gushed out. Lin Daiyu fell on the table with a smile. Alas, Baoyu rolled into the old lady's arms. The old lady smiled and hugged Baoyu, calling him a "sweetheart". Mrs. Wang smiled and pointed to Xi 'an, but could not speak. Aunt Xue can't hold on any longer. The tea in his mouth was sprayed on Tanchun's skirt. Pulling his wet nurse to rub his intestines, everyone in the underground bent down, some hid out and squatted and laughed, and some endured laughter to change clothes for their sister. Only Xifeng and Yuanyang supported her, but Granny Liu picked up chopsticks. She didn't listen and said, "The chickens here are also handsome, and the eggs they laid are small and strange." Amber gave a heavy pat in the back. Grandmother Jia said with a smile, "This must be Xifeng's fault. Don't believe him." Granny Liu is complimenting on small eggs and wants one. Xi-feng said with a smile, "One or two taels of silver, try it quickly. It won't taste good when it's cold." Granny Liu reaches out her chopsticks to clamp them, so she can clamp them there.

Analysis:

Granny Liu is a character in China's classic literary masterpiece A Dream of Red Mansions, a weather-beaten old woman from a poor peasant family in the countryside. The fate of Qiaojie, the daughter of Xifeng, is closely related to her. Grandma Liu was mentioned in Qiaojie's judgment and the song "Stay in Qing Yu". Their ancestors had the same surname as the Wangs of four families, so the book says that she went to Guo Rongfu to meet Mrs. Wang for a windfall. Granny Liu is kind, simple, smart and capable, and attaches great importance to feelings and righteousness. She has that kind of perseverance spirit, which embodies the traditional virtues of the Chinese nation in this old woman and is deeply loved by readers.

Granny Liu witnessed the whole process of Jia's rise and fall: as soon as she entered the government, Granny Liu was cautious, opened her joints and established a relationship with Jia's government; Secondly, entering Guo Rongfu, Granny Liu performed with her wisdom, humor and true colors, which brought endless laughter; Granny Liu took care of Guo Rongfu and stepped forward to become an important ending figure in A Dream of Red Mansions. Granny Liu appeared four times: the sixth time when Granny Liu entered Guo Rongfu, the thirty-ninth time when Granny Liu was talking nonsense, the fourth time when Granny Liu was drunk and lying in Hongyi yard, and the third time when Granny Liu was wronged by Xifeng. In terms of length, Chapters 6, 40 and 4 1, as well as the latter 39 chapters, the first 42 chapters, the first half 1 13 chapters and the second half 1 19 chapters, are all rich and colorful stories of Granny Liu.