Why are the myeons of Ongjin County included when that is not the case for any other county? Ongjin County itself is a second-level subdivision of South Korea, so Ongjin County itself should be an answer while its myeons should not be answers.
The top blue box in the third column should be filled with just "Jeju", not with "Jeju-si". Of course, it is advised to keep it blank until the player guesses Jeju or the quiz ends.