Before using the Stealth Potion, when they approached within about three meters of the zombies, it would arouse the zombies' suspicion. If they moved any closer, they were likely to be attacked by the zombies.
But now, after using the Stealth Potion, Wang Tao and his team could reach behind the zombies and place a knife at their necks before the zombies belatedly realized that people had arrived.
Naturally, the team did not give the zombies a chance, and immediately attacked. Any zombies they surrounded were doomed to die. Moreover, the noise they made did not attract the attention of other zombies far away.
In this manner, the team advanced, killing as they went.
Not knowing how many zombies they had killed, finally, Wang Tao and his group reached the core area of the Zombie Herd.
Here, there were many more zombies than on the outside, a density that rivaled the rush hour before the Apocalypse. And they were all Frozen Zombie Elites with levels above 4!