Yu Xing propped up a black umbrella with one hand and held a flashlight in the other. She wiped a thin layer of water mist from her face with her sleeve, stopping at the factory gate.,Yu Xindao: “I have a friend who participated in the investigation. He told me, but due to confidentiality rules, he couldn't say much. What he revealed was also vague, but it's better than nothing.”,After a pause, he stared into Yu Xing's eyes and added, "It's not cold at all. This temperature is just right."。