“I do have a idea”

"However, this can only make a quick buck." David looked slightly disheartened, "The World Chat channel will discuss the well city, and eventually, the overall structure will be known."

"Moreover, some people have already started selling pirated versions." Hawkins laughed lightly, "No matter, as long as we can survive to the end, it's better than anything else."

"What if a wave of zombies that can truly fly comes?" Ming raised his concern.

"That's what I'm worried about." Hawkins frowned, "At present, the accuracy of the arrow towers is not enough to deal with airborne mutated creatures. We can only rely on manpower to kill them. We have specialized personnel working on developing giant crossbows, but unfortunately, progress is slow."

"Yeah, as time goes by, the monsters are also evolving and will become more and more powerful. What we really lack now is not money, but people." David frowned as well.