I plan to move out of my officetel soon. I completed my 2 year contract in February and told the building's Budongsan that I plan to move on April 9th which is more than a months notice. He told me that I need to pay him 420,000 won to find someone to move in and I can't move out until someone moves in. He also claims this to be the law but I can't find this info anywhere on the internet. Could someone please let me know if I must pay him this fee.