The Sophie Vasi's underground city was like a labyrinth that was full of bends and hidden traps. If one were not familiar with the layout of the underground levels and strayed into it, the activation of the hidden traps would cause them to become easily lost.
The underground city was divided into four sections: north, south, east, and west. A massive drug lab which did both research and production occupied the northern and western sides whilst the eastern and southern sides were storage areas for sundries.
As there were too many people at the headquarters, An Xunuo was forced to escape toward the southern side.
The underground city was lined with surveillance cameras, and the control room could clearly see wherever she was headed in. There was no way she would be escaping the underground city. That, along with how she was viciously outnumbered, made escape all the more impossible. Gunshots rang out and left a row of bullet holes on the walls of the underground city.