Images and symbols about cranes

In the plot of "watching mosquitoes turn into cranes", there are more than 100 kinds of flying insects or birds close to mosquitoes. The author is not much better than flies and crows. Why do you have to be a crane? Please refer to the information about the image and symbol of cranes, and explain the reasons with the experience of Shen Fu.

(Hint: In ancient times, scholars in China used to describe their great ambitions in life with crane flying or crane ringing. As the saying goes, "A crane flies into the sky", and Liu Yuxi has a sentence, "A crane in a clear sky leads a poem to the sky", which expresses the poet's broad mind and positive ambition. In the author's young mind, it is a pleasure to dance with flying cranes and become "flying cranes in the blue sky". Therefore, "Xiang Qiang" in this paper is not only a description of concentration, but also a performance of inner yearning and single-minded pursuit)