Every morgue has lights, and inside the freezers, there are bodies and numbered tags, details, and such. Inside the freezers, white mist emanates because of the excessively low temperature inside.
However, when Ma Bing and the two security guards just entered, they unexpectedly found the morgue window open.
The morgue has windows both at the front and back, but they are generally closed, and it's virtually impossible for them to be open.
Now that Ma Bing and the other two found the back window open, and the two security guards never came out after entering, could it be that they exited through the back window?
...
When Ma Bing and the others found the two security guards acting suspiciously, Ye Qiu had already gotten out of the car. He didn't drive but instead went around to the back of the hospital.
Sure enough, he saw a middle-aged man who seemed a bit unusual, apparently carrying something on his back.
