The female teacher hesitated: "I remember she has a brother. I'll call him first, maybe he knows." Leng Xuan waved his hand and said, "Don't bother, I will contact her brother." After a pause, He turned to Cheng Feifei and asked, "When did she go out last night?" Cheng Feifei recalled and said, "It's almost ten o'clock." Leng Xuan nodded, and after asking a few more questions, He turned around and walked outside the classroom. Back in the car, Leng Xuan frowned and meditated to himself. He knew Zhou Li's character very well, and she never stayed home at night. If there was something special, she would call in advance to inform the people around her. At this time, he couldn't help thinking of the sudden interruption of the phone call last night.

  Perhaps, after Zhou Li left school last night, she encountered danger on the road and was about to call him for help, but the phone was blocked before the call was connected. While this is just a guess, it is indeed possible. At this moment, a flash of light flashed in his heart, then he got out of the car and looked around. After a while, he got back into his car and drove towards the police station. Half an hour later, he arrived at the gate of the police station. After getting out of the car, Leng Xuan walked into the building and went straight to Su Zhenggang's office. As soon as he entered the door, he saw that Su Zhenggang was busy at the desk, and he greeted him, "Brother Su." Su Zhenggang raised his head and saw that the person was Leng Xuan, and suddenly said with a smile, "Why are you here?" After speaking, He paused and said, "Is there anything you need my help with?"

Leng Xuan nodded and said, "Brother Su, I need to use your authority to get some surveillance video from the traffic bureau." Su Zhenggang responded immediately, "No problem, I'll help you right away." The video was uploaded to Su Zhenggang's computer. Leng Xuan said: "Check the video of the road near Huaqing University. The time was between 10:30 and 10:40 last night." According to Zhou Li's roommate Cheng Feifei, Zhou Li was at 10:00 last night. It took more than ten minutes to walk from their dormitory building to the school gate. In addition, Zhou Li called him at ten thirty-seven. If something happened to Zhou Li, it must have happened within ten minutes. Su Zhenggang divided the surveillance video of the road around Huaqing University into eight small windows and displayed it on the screen, and then dragged the time to half past ten. Not long after, Leng Xuan saw Zhou Li appear in the picture, and saw her carrying a satchel, walking alone on the road.

   After two minutes, Leng Xuan suddenly noticed that two men came out of the dark corner and followed behind Zhou Li. The two men were wearing hoods to hide their faces. A few minutes later, the two men followed Zhou Li and followed suit. Zhou Li also obviously noticed that something was wrong with the two men behind her, so she quickened her pace and took out her mobile phone to start dialing. The time was exactly 10:37. At this time, Zhou Li happened to walk under the surveillance camera, which happened to be the blind spot of the surveillance camera. Seeing Zhou Li disappear into the picture, Leng Xuan couldn't help frowning.

   At this moment, the two men in the picture suddenly accelerated and rushed towards Zhou Li's location. It's a pity that the surveillance camera couldn't capture what happened below because of the angle problem.