The reasoning for this is actually that Chi Ying (This novel’s Main Character), has been secretly spreading supplies aka. Food to all the other camps which have her name printed on the inside of each food wrapper making all the receivers ever so grateful for her help.

It’s fine, but this is the main act she does to earn all of the points that she uses throughout the novel (seriously she goes from earning 1 point per act per person who sees her acting to receiving several 100.000 points in just a few days, from an act that took at most 1 chapter to do the first time she does it and is only mentioned in passing for the rest of the 30+ chapters of the book it’s mentioned 2 times in total, at most 3-5 sentences.

And that how she earns all her points that she uses to buy the Anti-Zombie Virus...

In the extra’s the ML gives her a cross as an anniversary present.

Why?

Because back in the first 10 or so chapters her way of acting as a ‘virg*n marry’ was by carving crosses out of wood and placing them on top of the dead zombies.

While not a bad idea it’s was such a small part of the novel that it felt very underwhelming.

The group finds her in the first chapter, ‘rescuing her’ from a few zombies. She hides her powers from them and then follows them for tens of chapters as baggage, basically.

She does help them find out that a later addition to their group is secretly a higher than average zombie with intelligence barely managing to pass for a human by claiming he’s caught a bad cold.
Both her and the ML then follows the zombie to a dark corner where he attempts to kill ML (ML knows but pretends he doesn’t ready to kill him at the first sign of him attacking, because... plot reasons. Chi Ying seeing this attempt to protect him and gets scratched but she’s immune so never mind that. ML thinking she’s going to turn feels bad and spends a few days with her seemingly wanting to accompany her ‘till the end’, but she doesn’t die, and instead claims that the scratch manifested a power instead of turning her into a zombie.

(Something initially presented as a 1 in a 1000 chance and later in the story as a one in a million chance.)

Then she asks to join the team but ML refuse saying she’s got to many secrets, so she spills about all of her powers (while not explaining the how she got them part, or about the system), so she’s accepted into the group but the others can’t know about her powers. Except for the one support power she’s already shared they spent a good 10-15 chapters hiding all her offensive powers until they don’t, and for no reason they just tell the others.

then they plow through zombie hordes until the end of the novel. She’s actually so powerful that the rest of the group become obsolete and are reduced to pick up zombie cores.

At the ending she no longer in the group but has been transferred into a solo team and becomes the government’s extermination tool.

The End.

The two extras showed their relationship, with Gu Chi utilizing honey-trapping and beauty-trapping to lure MC over. The last scene was MC gifting a beautiful zombie nucleus to Gu Chi for their anniversary, and Gu Chi only realized the nucleus was split between two engagement rings after MC ran away in embarrassment.

It's her fault that even the ML's anniversary gift for her was a cross HAHAHAHAHAHA