Traditional Culture Encyclopedia - Weather inquiry - Why is it hot and the road looks blurred?

Why is it hot and the road looks blurred?

This is the refraction of light.

In summer, the road surface will absorb a lot of heat from the sun, which will raise the temperature in the area near the ground. Due to the expansion and contraction of air, the air near the ground will be very thin, and the uneven air density will change the refractive index of light, thus making what you see uncertain and fuzzy.