Comments of chapter undefined of While Others Cultivate, I Use My Multiverse System

Okay but who is Fen? Is it the worm? Also, where'd that worm come from? I'm liking this novel, don't get me wrong, but I really dislike the sudden, random transitions the author's put up since it can be really, REALLY confusing. I can only hope it'll disappear in future chapters since it honestly breaks the flow of the story and forces me to have to go back and re-read entire paragraphs just to get a sense of what's actually going on. Otherwise, it's all good.