I Can See Everyone's Threads

After Shen Yebai drank the bottle of potion, he saw the thread. It's in everyone. Red means love, gray means hate, warm yellow means concern, and cold silver means someone is watching you secretly. He is a delivery rider and part-time word tester. He rode an electric bike through the streets and alleys of Yunxia District, and he could see through the relationships of everyone on the street at a glance - the couple was about to break up, the man in a suit had an underground affair, and the old man reading the newspaper on the corner had a thread wrapped around his body that did not belong to a living person. My sister disappeared four years ago, and all clues have been cut off. Now he knew—the clue wasn't on the ground. Underground. In those alleys that grow longer at night, in those negative floors that don't always exist, in those cracks that swallow people. "Your sister is not dead. But if you want to find her, you have to survive first."