"You are from Yuanmou, Yunnan, I am from Zhoukou, Beijing,,,," Where does this poem come from?

From the essay "One Hundred Years of Solitude" in the modern Cen Mengbang's personal collection "If There Is No Sun Tomorrow". The original text fragment is:

Before this, I have been analyzing the evolutionary dynamics of human beings. I once came to an absurd conclusion that humans walk upright to prevent sciatica. Later, this conclusion was overturned by myself. I began to believe that it was because women walked first and men had to walk upright in order to kiss them. , then in the final analysis, the driving force of evolution should be - love. ?

Therefore, my attitude towards love is almost pious, and I even wrote a poem specifically for it: "Primitive Love" You are from Yuanmou, Yunnan, and I am from Zhoukou, Beijing, pulling you to grow A gentle bite from the fluffy hand, love makes us walk upright!

It is said that this poem pioneered symbolism and became one of the rare classics in the history of Chinese poetry. However, the pessimism brought about by my broken love made me mentally shaken. I began to have doubts about my beliefs. The dilemma made me extremely irritable.

Extended information:

In the essay "One Hundred Years of Solitude", music, movies, writing, dreams, reading, friendship, love, these topics are all related to personal daily life and Preferences. Fragmented life fragments and youthful ravings of varying lengths reveal the author's real feelings and sentiments about life. In "One Hundred Years of Solitude", Cen Mengbang also tends to show his inner world and the sensitive and delicate emotions of adolescence.

Due to the relatively limited life experience and experience, Cen Mengbang’s “little feelings” are generally expressed as personal life experiences and inner emotions. This is completely different from the "body writing" of Lindbergh and the desires and appeals of the "new generation" writers.