Tomb Robbing, Parallel World

Why is there only 1 person? This book is pretty good But what is speechless is that I read this book for three or four hours before, but now it only lasts less than 30 minutes? I'm speechless. I've been reading books, so I took some time off to see if it lasted less than 30 minutes. I saw that sometimes I spent four or five hours reading this. Well, after a long period of not moving, why did I stop doing it for 30 minutes? Do I express a question mark now? ? ? ? ? I'm really speechless, but I'm still curious why there are only two people including me and I. I express my confusion. This book is actually quite good.