I am trying to remember a book I read years ago probably in the early 2000's, but I don't know how old the book is. But I do remember the basic plot.
The world, or at least the country it is set in, is split in half. One half is a dystopian poorer world where crime rates are high and blood sports are the most popular form of entertainment. Libraries are all but abandoned. The protagonist lives in this half; he likes to read and longs to escape to the other half of the world/city.
The world is split by a giant wall which I believe he tunnels under to get to the better half of the world, which is more like the countryside, rather than the city he has come from. Everyone is well educated and seems perfect. The protagonist gets to live with a wealthy family; the father takes him under his wing and teaches him about how to make bonsai trees. From this he finds out this father figure was once a rebel trying to let city people into their half, but bad behavior results in a partial lobotomy to make them calm.
When the protagonist finds this out he tries to escape back to the city half of the world.
For the life of me I cannot remember the books name. I've tried a Google search and get results like Nineteen Eighty-Four, which I expect the book I'm looking for took influence from.