I had just recovered from a serious illness and was recuperating in a town full of crabapple flowers. I met the silent but good-looking landlord Cheng Naxue. I accidentally discovered a novel in the room where I lived, which wrote Yanfei's obscure confession to Cheng Naxue. Cheng Naxue was very excited after dawn, but "I" was confused. While out for a walk. The proprietress of the coffee shop happens to be the real owner of the house and Yan Fei's mother. After the conversation, they unexpectedly learned that Yan Fei had been dead for a month and although Cheng Naxue was regarded as Yan Fei's sister, her true identity was a child with blindness in the right eye who was picked up by the proprietress of the orphanage on a winter night. "I" was entrusted to take care of Cheng Naxue. After returning home, I found that there were many inconsistencies in the words of the landlady. I misunderstood and thought of giving up. Cheng Naxue was woken up in her dream and took Cheng Naxue, who had stomachache, to the hospital. Instead, she met a real bystander - Yanfei's colleague, a nurse. I saw some clues about what happened.