Searching for the story about two boys, one from city and one from country who spend time at each others homes, both think the other is poor
Are you talking about The Prince and the Pauper?
The Prince and the Pauper
The book that you could be looking for is known as 'The Prince and the Pauper'. This is a children's literature book that was written by Mark Twain. It was first published in Canada in 1881 and later in the US in 1882.