After all, Zheng Yi still needs a lot of time for cultivation and can't be in the Doomsday World constantly.
More and more living people gather in the settlement, like a tempting cake that continuously entices the surrounding zombie hordes.
To ensure that the painstakingly established settlement power wouldn't easily be wiped out after his departure.
Zheng Yi would preemptively strike, while there is still time, leading the team to remove this major threat first.
This battle is a total mobilization of the settlement, and almost all tanks, armored vehicles, and gunfire ammunition have been deployed, along with almost all trucks and other transport tools.
At the same time, the settlement imposed controls and curfews to prevent safety loopholes, avoiding being caught off guard when the main force goes on an expedition.
Of course, Zheng Yi also has his considerations.
While annihilating the zombie hordes, he could also plunder a large amount of zombie flesh and Crystal Cores.
