I can rewind time to prevent death

"So you're saying that the speed at which you turned your head in the photo is several times that of Xia Ruolan?" Xiang Er said. Yan Junze started to smile, "The faster the better. I've gathered all the photos of people turning their heads and took this group photo; I didn't expect it would be so powerful. Tonight, everyone downstairs is not sleeping, only I am, so at this rate, the chances of me encountering the Black Dress Woman in my dream will be very high." After finishing his sentence, Yan Junze took out the Burst Nail he had bought from his pocket and said, "I'm going for a walk outside, don't come out, just wait for me in the private room." About half an hour later, he came back, and Xiang Er was standing at the window, looking at the night view. After returning, Yan Junze threw the empty box that contained the Burst Nail into the trash can and asked with a smile, "What did Ku Zai say to you after I left you two this afternoon?" "He apologized to me," Xiang Er answered, without turning her gaze away. "After observing these past few days, I feel that his nature isn't bad, he just doesn't know how to interact with people," Yan Junze said. "I've noticed that too, but I should have been a bit better than him at first, right?" Xiang Er said hesitantly. Yan Junze laughed, "You both are very innocent, but you're not in a hurry, and you're slowly learning to understand this world. He, on the other hand, has been holding back for too long and is eager to show himself, which results in him getting beaten down as soon as he pops his head out." Xiang Er covered her mouth and laughed. "By the way, are you still collecting hair?" Yan Junze suddenly asked. Xiang Er was startled and did not reply immediately. "I'm just asking casually," Yan Junze said, "After meeting Xia Ruolan today, from noon until the afternoon, I noticed that her hair seemed to have gotten shorter, and then I remembered your hobby. There's nothing wrong with having a special penchant, as long as it doesn't hurt anyone." "How could you tell?" Xiang Er asked curiously, aware that Yan Junze was not blaming her. "The first time I met Xia Ruolan at the restaurant with the Gu Bai couple, I noticed that when she bowed her head, the hair on her forehead just managed to hang by her ears. It was the same when we met at noon today. But before the group photo earlier, I found that the strand of hair was now half a knuckle away from her ear, obviously much shorter," Yan Junze explained while sitting down and rolling the bedding over his legs. After hearing his explanation, Xiang Er turned her head and looked at him earnestly, then said, "I can't control it. When I see someone with good hair quality, I want to take some of their hair." "Your hair must have gotten very, very long now, hasn't it?" "Yep." "As long as you're not hurting anyone, it's fine. This little habit is acceptable," Yan Junze said with a smile, lying back in his chair. A moment passed, and he took out the group photo again, glanced at his own image in the photo and saw his head was turned almost completely to the side; only the back of his ear was visible, even his profile had disappeared. He turned over, set the photo aside, and said in jest, "Now that I think about it, having to rely on sleep to complete the task makes me not sleepy at all." Xiang Er said softly, "I remember when I couldn't sleep as a child, my mother would sing me the popular lullaby from Wang Family Bay—'Good baby, obey.'" Turning her head to look at Yan Junze, she smiled, "But I can't quite remember it now, I only have a few familiar melodies in my head." "A melody can still be hummed," said Yan Junze with his eyes closed. The room fell silent. About ten seconds later, a hum came from the front of the window, reverberating in the private room. Since she was afraid to be heard by people downstairs, Xiang Er kept her voice very low, which made it sound quite deep. But it was precisely because of its depth that the tune seemed prolonged and melodious, exuding an elegant charm—composed, soft, and clear, with no ups and downs, only like a mother's whisper, chanting. One must admit, although Xiang Er didn't quite remember the lyrics, the mere humming already captured the essence. It was like a gentle breeze constantly brushing against Yan Junze's ears—ethereal and soothing, calming his restless thoughts. It felt as if one were in the middle of a spacious square, with the evening drum and morning bell, deep and resonant, coming from afar, shaking the soul. Yan Junze's vision, which was blurry at first, gradually became clear. He noticed his feet stepping on unfamiliar green stone bricks, each crafted precisely and arranged neatly. Looking up, indeed, he found himself in the middle of a large square, surrounded by towering buildings similar to those in Olay Great Capital. The shapes of the buildings resembled those of No. 7 Mansion, with round rooftops and curved eaves. Some roofs even had spire-like symbols at the very top. All the houses were primarily gray, white, and black. Looking around the vast square, there was no one else, and not far in front of Yan Junze stood a tall, slender clock tower. At the top near the spire of the clock tower, there hung an ancient bell, without a second hand. The hour and minute hands seemed to be frozen, making it unclear if they were still operating. "What's going on here? Where is this?" Yan Junze looked all around, everything before him felt so real; he noticed nothing amiss. He took a few steps forward, but after only a short distance, the door of the clock tower opened, revealing utter darkness inside. Then, a withered hand extended from the dark, reaching out the door, with incredibly long and even somewhat curved fingernails. The hand grasped the edge of the door. Yan Junze stopped.