Said by someone who can read a map and knows places like Bucheon and Uijeongbu aren't Seoul.
Uijeongbu isn't Seoul?
Well, technically no. But if you can point out the greenery separating the two, I'd be happy to entertain your POV.
From Buk-Uijeongbu in the north to Suwon in the south... it's a solid mass of cityscape.