What does the word "dolphin" in the ancient poem "A Tour to Shanxi Village" mean?

Porpoise refers to piglets, which refers to pork in the poem.

Original sentence:

Mo Xiao’s farmhouse is full of wax and wine, and in good years the guests are full of chickens and dolphins.

Translation: Don’t laugh at the farmers’ wine. In the year of good harvest, there will be plenty of delicacies to entertain guests.

Source: Lu You's "Visit to Shanxi Village"

Original poem:

Mo Xiao's farmhouse is full of wax and wine, and in good years there are enough chickens and dolphins for visitors.

The mountains and rivers are full of doubts and there is no way out, and there is another village with dark willows and bright flowers.

Xiao Gu followed Chunshe near, and his clothes were simple and old-fashioned.

From now on, if I am allowed to take advantage of the moonlight, I will knock on the door all the time and night with my stick. ?

Don’t laugh at the farmers’ wine. In the year of good harvest, there will be plenty of delicacies to entertain guests. When mountains and water kept appearing in front of me, I was wondering that there was no way to go. Suddenly, I saw the willows were thick green, the flowers were bright, and a village appeared in front of me. ?

Playing flutes and beating drums, forming groups to celebrate, the Spring Society Festival is approaching, commoners wear plain hats, and the simple ancient customs are still preserved. From now on, if everyone is allowed to hang out at night, then I will use a cane and knock on the firewood door of my farm friends from time to time at night.

Lu You (1125-1210), Ziwuguan, nicknamed Fangweng, Han nationality, was born in Shanyin, Yuezhou (now Shaoxing), grandson of Shangshu Youcheng Lu Dian, a writer, historian and patriot in the Southern Song Dynasty. poet. Lu You was born when the Northern Song Dynasty was overthrown, and he was deeply influenced by his family's patriotism when he was young. During the reign of Emperor Gaozong of the Song Dynasty, he participated in the examination of the Ministry of Rites, but his official career was not smooth because he was rejected by Qin Hui. After Emperor Xiaozong of the Song Dynasty came to the throne, he was granted a Jinshi background and served successively as the registrar of Ningde County in Fuzhou, the official of the imperial edict, and the general magistrate of Longxing Prefecture. Because of his persistence in resisting the Jin Dynasty, he was repeatedly rejected by the Zhuhe faction. In the seventh year of Qiandao (1171), at the invitation of Sichuan Xuanfu envoy Wang Yan, he joined the army and served in the Nanzheng shogunate. The following year, the shogunate was disbanded, and Lu You was ordered to enter Shu, where he became acquainted with Fan Chengda. After Emperor Guangzong of the Song Dynasty succeeded to the throne, he was promoted to be a doctor in the Ministry of Rites and a reviewer of the Academy of Records. Soon after, he was dismissed from office and returned to his hometown for "mocking and chanting the wind and moon". In the second year of Jiatai (1202), Emperor Ningzong of the Song Dynasty ordered Lu You to go to Beijing and preside over the compilation of Xiaozong's and Guangzong's "Records of the Two Dynasties" and "History of the Three Dynasties". After the book was completed, Lu You lived in seclusion in Shanyin for a long time. He passed away in the second year of Jiading (1210) and left his last work "Shi'er". Lu You kept writing all his life and made great achievements in both poetry and prose. His poems have easy-to-understand language and neat and rigorous composition. They combine Li Bai's majestic and unrestrained style with Du Fu's melancholy and desolate style. Their patriotic enthusiasm has a profound impact on later generations. Lu You also has a talent for history. His "Book of the Southern Tang Dynasty" is "concise and accurate", and the historical commentary is colorful and has high historical value.