Along this line, she marked the human bases where the zombie birds would pass through if they were headed in the direction of the Southwestern base. As she drew more and more bases, the expressions of the people became more and more solemn. They all realized the problem.
"I think you've already guessed what I'm going to say. If no one can stop these zombie birds even as they pass through so many bases, this is a problem in itself. If they are ordinary zombies, they will probably be killed halfway. They won't be able to reach us at all.
Even if some of the bases were relatively weak, there would definitely be fewer zombies left after they passed through each base. If this continued, their numbers would dwindle. However, these zombie birds could pass through the bases unscathed. This was the terrifying thing about them.
"Then why is this happening?" one of them asked.