Why do I stand on the mountain and look at the fireworks in the distance, as if I were slowing down?

First of all, when we see fireworks in the distance, it is actually the light emitted by fireworks that refracts into our eyes.

Secondly, fireworks explode with explosions. Because the speed of light is faster than the speed of sound, we often want to watch it again and listen to it again, but we know that they happen at the same time, and the subconscious knows that they happen at the same time, so it will be unnaturally superimposed, and then we will feel very slow, just like slow motion.