On the plateau, at the base,
At the Heavenly Net command center,
The leader of the Human Observation Team kept adjusting the screen, counting green safe zones across the country with an area of at least one square kilometer.
Reaching that figure meant these civilian settlements could enter the Heavenly Net command headquarters' sights.
This was the Government's standard for a small settlement.
Do not think one square kilometer was small. That was a full 1,500 mu of land!
One million square meters!
An ordinary residential complex covered only a little over 50,000 square meters.
In other words, one square kilometer equaled the area of twenty ordinary residential complexes, already a considerable amount of territory.
Territory that large qualified for registration with the Heaven and Earth Net Bureau.
At present, some local governments with weaker armed forces had relocated after attacks by zombie hordes, and their temporary bases covered only around one square kilometer.
Medium-sized settlements covered ten to ninety-nine square kilometers.
Large settlements were green zones covering at least one hundred square kilometers.
At present, only a handful of provincial capitals nationwide had managed to establish large settlements.
It was not that other cities could not clear zombies from that much territory, but that defending such a vast area was too difficult.
Historically, China's borders had often been harassed by barbarian tribes and had long suffered from it.
With great foresight, Qin Shi Huang had expended enormous manpower and resources to build the Great Wall, keeping the nomadic peoples beyond the passes.
After all, nomadic peoples chose particular seasons to invade; they did not think about it every day.
But zombies? Every day, they moved instinctively toward places with more people, so however much territory was enclosed, an equally extensive defensive line had to be defended against zombies.
And