Yes I have :-) I'm German and once lived near one proposed track, meant as an upgrade to an already existing, heavily used main track, planned with many stops over short distances.

Edit: Maybe they could use this to overbuild their already existing net with a dozen to two dozen strategically located stations, as an overlay of hyperhubs, and use the interconnections to conventional HSR as spokes which branch off of these.

To make it even more competitive to air travel, especially for longer distances.

You assume they'd built those connections where they are needed most. That's not how it works in China...

You assume that company is giving an accurate picture of what it has achieved. That's not how it works in China...