At the same time, a blinding spirit light shot out from his hand, aiming at the ground in front of the Protection Wall. At first, those who were watching thought he had lost control and the spirit light had missed its target. But then, they saw the spirit light merge with the ground and quickly spread out all around.
Next, a vast expanse of land in front of the Protection Wall turned into a black swamp. The swamp was a hundred meters long and fifty meters wide, just a meter away from the Protection Wall.
As the swamp formed, the zombies at the forefront fell into it. Everyone immediately understood Fang Jintang's intention.
This swamp was akin to the ancient moats protecting cities, and it was even more terrifying than a moat. With this swamp, there was no need to worry about the zombies breaching the Protection Wall unless they could fill it in.