The Norwegian Forest Bar, like the Night Bar, definitely couldn't have surveillance cameras installed in the restrooms, but there were cameras in the corridors and some of the rooms.
There are several surveillance cameras on the corridor leading to the restroom, and they provide a very clear view.
Now that the surveillance footage has been brought back, when Zhao Ruxue and Zhao Rubing wanted to watch it, Wang Chao had someone play the video. Zhao Rubing quickly spotted the security guard Xie Cheng among the dimly lit crowd.
Xie Cheng was moving around the bar, occasionally guiding customers or answering questions. Just two hours before, as Xie Cheng headed to the restroom, a man suddenly patted his shoulder.
This scene was seen by Zhao Rubing, Zhao Ruxue, Wang Chao, and others, but the man who patted Xie Cheng wasn't very clear.
Then Xie Cheng was taken into the restroom, and by the time the man came out, Xie Cheng was dead inside the restroom.