What is Hu Shi's earliest vernacular poem?

Hu Shi's 1965438+ a poem "Two Butterflies" (original title "Friends") was published in New Youth magazine on August 23rd, 2006. Zhao Wenzhong called it "the first vernacular poem in China". The original text of this poem:

two butterflies

Two yellow butterflies, both flying into the sky.

For some reason, one flew back.

The remaining one is lonely and pitiful;

I have no intention of going to heaven. It's so lonely.