Unnecessary plot

#1

I’m at chapter 456 (there are 500 chapters). The book is almost done but I realize that there are many unnecessary plots in this book. For example, yang xi spends half their time searching for treasures. And he doesn’t even use half of them to increase his strength. Isn’t that stupid? What’s the sense of gathering so many treasures if it’s not for his benefit? And even though the treasures he found could help him in battles, he relies only in his strength. Again, he ignores the treasures he collected smh. Half of this book is about treasures.
Also, his growth became very slow in these last few chapters. It’s hard to believe that the end is coming because his growth is not that intimidating to me as a reader anymore.