I don't like those manhua or webtoon prologues cause. They never really show me how the series is going to play out and if somebody decides to only release the prologue without any other chapters he basically guarantees a bad rating for the series
@mommy chapter 0 was meant to be a sort of "trailer" for the series, like a promo chapter that was released some time before all the rest. so I guess it's like the equivalent of movie trailers that show like half the movie ¯\_(ツ)_/¯ lol
It seems that in this universe, people are already used to the zombie invasion and have developed fortress cities to defend themselves. Eventhough there are still zombie outbreaks here and there, from time to time. A post-zombie world.