Cheongna feels empty

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The city feels empty; the commercial areas are full of vacant units.
Since there is no subway,
the transportation isn't great either.
I used to think the order was Songdo, Cheongna, then Geomdan,
but after actually visiting, it seems to be Songdo, Geomdan, then Cheongna.
Songdo will likely thrive on its own like an island,
and Geomdan is close to Gangseo, Mapo, and Magok via subway,
so whether by car or subway,
its accessibility to Seoul is better than Cheongna's.
Also, perhaps because the urban design is more concentrated,
the commercial districts are more active.
Cheongna feels a bit ambiguous.