By this point, the zombie horde had filled Nanshu Base. Even the supply warehouses at its very center had not been spared. Those standing high above, spared from facing the zombies at close range, felt conflicted. From their vantage point, they could see the entire base clearly and fully grasp just how dire the situation was.
He Feng and the others watched Chu Han tensely. The zombie tide had reached its hardest stage to resist. What trump card did Chu Han still have that could turn the tide?
Click!
A soft sound rang out.
Chu Han directly flipped the switch on the massive speaker. That tiny sound drew everyone's attention toward the huge device Chen Shaoye had invented and specially sent to the front lines.
Could they really turn things around with this thing alone?
Many people began doubting it from the bottom of their hearts. Gao Shaohui, especially, had considered it useless from start to finish. Chu Han had only just received it himself, and no one knew what effect it would actually have.
But the moment Chu Han pressed the activation button, an extremely faint sound wave emerged from the speaker. Through the loudspeakers in the command room, the sound vibrations spread to every corner of the base.
Once the sound had been amplified without limit, many people could hear it. Yet strangely, although it was clearly loud, they could not make it out clearly.
It sounded somewhat like a dolphin's cry, yet also somewhat like a baby's wail. It was utterly bizarre!
The people in the command room all wore baffled expressions, unable to understand how this incredibly strange sound could help with their battle.
"Can you hear it clearly, but not clearly at the same time?" Chu Han asked with a smile.
He Feng nodded. "It