What is the basis for me to find spring?

I found that the basis of spring is that the seeds on the hillside have begun to sprout and birds have appeared in the sky.

Fan Wenju, author of Three Topics of Song of Spring, published in Shuofang 202 1 No.8.

The relevant paragraph of this article reads as follows:

The sun came out of the clouds and peeked at my tears. A bud has grown on my chest. As the final winner, I smiled and waited for a green bud to blossom and bear fruit.

Looking at the still blue sky, intoxicating fragrance wafted from the hillside, mixed with the smell of my sweat. A bird flitted across the sky and shouted, "I found spring."

Author Fan Wenju, a native of Xiji County, Ningxia, is a member of Chinese Poetry Society, Ningxia Writers Association, a member of Ningxia Poetry Society, a student of Xihaigu Writers Training Course of Lu Xun College of Literature, and the editor-in-chief of Huluhe magazine.