Look up the text about the ancient cattle slaughter system. It is indeed recorded in the Book of Rites that the laws of the Tang, Song and Five Dynasties prohibit the killing of cattle, regardless of the old, weak, sick and disabled. Only cows that die of natural causes are allowed to be skinned, sold or eaten. Based on this, the law examination of the Nine Dynasties also reached the conclusion that "Zhou was forbidden and Han was especially strict". It seems that emperors of many dynasties knew the importance of plowing cattle and took protective measures against them.
Li Bai's poem "Boil a sheep, kill a cow, and keep one's appetite in suspense" in "Into the Wine" is actually borrowed from Cao Zhi's "Route". In fact, the original text is "Gao Miao buys wine and makes friends from me." Chef China cooks sumptuous meals, cooks sheep and slaughters fat cows. "So, Li Bai didn't really kill cattle, rather, this is his expression of Cao Zhi, the representative figure of Jian 'an style, and the aristocratic life.
Li Bai also wrote in his other poem "Xiezilou Farewell to School in Xuanzhou" that "the bones of great writers are your brushes, and in Tianyuan, I am Xiaoerxie who grew up beside you". The poetic works of that era had a far-reaching influence on Li Bai's poems and songs.
It is better to discuss the far-reaching influence of Cao Zhi and others' poems on Li Bai's creation than to discuss the matter of killing the cow and killing the head.
Because some people have verified that there are more than 100 poems by Li Bai, all of which are words in Cao Zhi's poems. For example, poems such as "White Horse", "Misfortune of Concubine" and "Antique", the fifth and the forty-first poems.
As one of the representatives of Jian 'an style, Cao Zhi is unique in his poetic style, artistic technique and personality temperament, while Li Bai is very similar to him in root and temperament.