Midnight Contract: the Non-Existent Elevator

**At midnight, the phone turns on by itself. ** A text message with no number found: You have been selected. I had ten minutes to decide whether to go or not. The chosen ones all have a hole in their heart - they have lost someone, owed something, and have something to say that they will never have time to say in their lifetime. Gu Chenzhou, a thirty-six-year-old criminal police officer, has suffered from insomnia for eight years. The night my mother disappeared, she only left a photo on the table with an address written on the back: No. 137 Changping Road. Jiang He, a 24-year-old graduate student in architecture. The tutor studies "A house will remember the people who lived there". Her undergraduate roommate went into an old building for surveying and never came out again. The system paired them up and threw them into a non-existent thirteenth floor. The rules don't make sense: don't respond to the counting sound, and leave this level before the lights go out. The obsession's words are half true and half false. If you violate it three times, you will be gone. One checks the person, the other checks the space. In the end, I found out it was the same thing. This building trapped a man for thirty years. She was not waiting for her son. It was the son who came back and confessed his sins.