That wasn't a bullet

Nanzhi stopped, sensing presences at the end of the tunnel ahead.

She had been walking for half an hour.

The Virtual Map was useless—it still displayed the map above ground. Even so, she was certain she was getting closer to the Underground Supermarket, the more ants she encountered. 

On another note, the subterranean tunnel network was far more extensive than she had imagined. The ants had expanded their territory this much?

Crrkk.

Nanzhi crouched low against the damp tunnel wall, her breathing slow and controlled. Her body and clothes were covered in mud laced with ant pheromones, masking her presence.

A line of soldier ants and lesser mutant ants marched past, carrying people on their backs.

She was about to intervene when she realized the truth—these people were already dead. From the looks of it, they had been freshly killed.