Gu Zi did not control his volume. Not only did Mo Xue hear Gu Zi's excited scream, but the zombie NPCs also heard it.
The difference between the two was that Mo Xue lowered her head in shame and anger. She was unhappy and wanted to hide herself. On the other hand, the zombies rushed towards the direction of the sound in groups of three to five, eager to try their prey.
The NPCs could not be blamed for grouping up to bully others. It was really because players had become difficult to find.
According to the settings, they could only attack after seeing people. The players had learned to be smart after half a day and hid when they saw them. Everyone was hiding in the huge villa area. It was really not easy to find them.