From the time I was born, I knew that my world was surrounded by high walls. I don't know hundreds of years ago, in order to withstand the harsh environment, people built eight ring-shaped high walls and bound themselves inside. I thought the high walls were used to protect us, until later... It turned out to be so. This is a high wall. People inside the wall don't want to get out, but people outside the wall want to come in.
Purpose: Pursuit of freedom and desire