@Mivas That's a fair point, except that we're dealing with Chinese readers here, so it's equally unfair for us non-Chinese to assume that they wouldn't figure it out, especially given other clues (like her unique hair color). I know that her hair color is likely just for the comic, but that's something the comic's author needs to consider, of course.
But her name isn't even the real issue. The real issue is the sudden addition of this "mysterious" woman that Nie Li traveled with in his past life. A good author would have teased this plot in advance, not just dropped it in the second it's necessary to move the story forward. In fact, the author has gone out of his way to have Nie Li repeat that he knows who Ning'er fell in love with in the past, which is why he isn't worried about how much she obviously loves him now. It wasn't even that long ago that he realized his interactions with her in this life might have changed her story, so he should be more considerate of her feelings.
Nah, the more I think about it, the worse this development is, from a writing standpoint.