you mean something like this? (see attached green box)

maybe?is this the same thing in your picture as in mine?

good question 🤔 I guess yea, but can't verify it

In fact, the background of this question is...the same code, different deployment methods, the response time is different

yea, that is possible. Imagine for example two deployments. One in germany and one in texas (usa). Now a person from germany request stuff from germany -> fast. After a few hours he request it from texas (usa) -> slower. And that's with the same code

yea, I couldn't agree more.
I tried to use PageSpeed Insights to analyze my site and the results I got from there,
Won't PageSpeed Insights automatically choose better routes to websites?

Perhaps the question is beside the point, forgive me😶

I don't know how pagespeed insights work in the background. You might want to use your browser lighthouse results to check it, because then you can compare it (two request from the same computer with the same internet)

If it is my network, it is really normal, because one is in the usa and the other is in Hong Kong, just like you said,
Maybe I need to do some research on how pagespeed insights works

Well, thank you very much

Happy to help