After Night Gate

If you open a window, you may see endless sunny days and sunshine, but if you open a door, what will be waiting for you? Abandoned tunnels eroded by darkness, forgotten underground rooms in the hospital, and Room 147 that mysteriously appeared. What will the world be like behind the door? Is it despair or eternity. Is it a mud puddle full of moisture, or is it the unknown deep in the Xia Lin? This is the door, and this is the world behind the door.