Day in South Korea

I spent all this day in South Korea in my way to Mongolia, I supposed to stop here for around one hour for connection flight to Ulaanbaatar, the capital of Mongolia but there was a delay in the previous flight from Beijing to here so I missed the flight.
The next flight to will be after 24 hours but I stay for more than 30 hours as the next flight will be delayed and here I am writing this post from airport hall,
Anyways the delay is over all trip as it began in Doha, May 15, and I hope nothing like this going to happen in my home flights.
I spent the whole day watching and exploring things here but I did not buy anything, as everything is so expensive.
It seems that the people here are kind and helpful but not all of them as well