I Was Locked up in a Dark Room at the Beginning, and I Was Killing Ghosts in the New World.

The last takeout order was delivered to Song Ci in a village he had never heard of... The many strange things along the way are beyond description in modern language. A tunnel that appears for no reason. Lights flashed overhead. An exit with no end. Unable to make a call. Song Ci's vision went dark, and when he woke up, he found himself in a hut made of iron... Outside the house, a man stood under the dim light, holding a freshly lit cigarette in his mouth, quietly looking at the six iron doors not far away...