What's the effect of writing at the beginning of the article that the weather is very hot?

Write that the hot weather is actually the reason for climbing the cliff, paving the way for the following writing.

Excerpt from the original:

It was a hot July day in Philadelphia-56 years later, I can still feel the scorching heat wave. The five boys with me are tired of playing marbles with the lens and burning holes in dry leaves, and are looking for other interesting things.

Text subject:

This paper tells the story of "I" climbing a cliff in distress when I was a child and the experience of overcoming difficulties step by step with the help of my father, thus drawing a universal philosophy of life: difficulties are not terrible. As long as we firmly overcome our beliefs and break them down into small difficulties, we can break them one by one from now on and finally overcome them successfully.