Wang Bin quickly joined in the task of collecting magic cores, and it took them over half an hour to finish gathering them all.

After collecting the magic cores and having lunch, they returned to the place where the elite zombie had escaped yesterday. When they arrived, they were shocked to find over a hundred thousand zombies surrounding the building, and who knew how many more were inside.

"Motherfucker, we should have brought more people!" Wang Bin regretted not bringing more people along. Tasks like collecting magic cores could have been delegated to others, allowing them to focus on killing zombies.

"Do you think there might be a King-level zombie in there?" Little Nan asked excitedly.