章 480: Chapter 342: Great Demon Mark

Yan Meiyu continued the conversation, "Currently, South City, Huiyuan City, Hengchuan City, and Shanjiang City are interconnected, and connected underground are bunkers with rock bodies at least ten meters thick, ensuring that should any unforeseen events occur, we can withstand the first wave of impact."

"At the same time, within a ten-kilometer area of the fog-free zone, we have established thirty underground outposts and forts each capable of accommodating three hundred people. Originally, our construction teams were already short of hands, and logistics personnel were extensively involved in the construction of bunkers, necessitating a slowdown in speed. But now, we should be able to continue expanding outward."

The underground outposts and forts are integrated structures, but their main construction relies on the wilderness environment, embedded underground, forming vault-like underground spaces with certain storage capabilities.