It's poorly written. The whole paragraph roughly says that the MC had read quite a few web novels about transmigration/reincarnation before, so when he suddenly found himself in this vast darkness, he quickly related it to the various experience of the MCs in those novels and calmed himself down, even feeling a bit excited.
"In his spare time Xia Ya would also like to read light novels, and was quite knowledgeable to the strange encounters the main characters would often encounter, thus upon finding out he was suddenly thrown into this bleak, desolate land he was quick to regain his senses, in fact he was even a bit excited."