Can a place ever be completely quiet?

I'd say it's nearly impossible for a place to be completely quiet, because there's always some ambient sound present. Even in remote natural areas like Jiuzhaigou that I visited, you still hear water flowing, leaves rustling, or insects buzzing. Here in Shanghai, even in quiet parks like Fuxing Park that I mentioned earlier, there's always distant traffic noise or birds chirping. That said, these natural background sounds often create a peaceful atmosphere rather than disturbing silence. The closest we get to true quiet might be soundproof rooms, but even then you can hear your own heartbeat or breathing.