Xini City, most of the civilians are hiding in underground sanctuaries.
The moment the Safe Zone was opened, several modified versions of F3.5 took off from the airport, launching into supersonic cruise, speeding away in several directions!
Engraved on the fuselage and wings are floating images, effectively reducing air resistance and fuel consumption.
After some experts' improvements, the cabin is filled with reserve fuel to accommodate longer flights.
Five years of time, all of humanity united, has developed some supernatural sciences.
The leader of Xini City loudly announced on television: "As long as we defeat the [Demon], we can seek refuge in other cities."
Xini City's willingness to be the first to open the Safe Zone is indeed quite remarkable!
It's not that they are particularly brave, but the residents are actually in a sort of information cocoon.
They believe other cities are opening simultaneously, not realizing they are actually guinea pigs.
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