"Later, I'll give each of you a portable camera. Turn on the recording function and for the next four hours, you will be moving around various areas of the factory with your cameras. You can only stop recording to use the restroom. After four hours, if you haven't left the factory and your recording hasn't been interrupted for more than five minutes, you pass.",How could it be so cold It's like a lifeless thing without any temperature.,After powering on, only one-fifth of the battery power remained in the upper right corner of the camera. He fiddled with it casually and discovered that the camera had a night vision mode, which greatly facilitated their movements in the dark, although it consumed quite a bit of power.。