They Are All Refining Wood, Water and Fire, What Happened to Me Refining Earth?

I didn't understand the introduction, and then the narrative characters kept changing in the middle, making me wonder who he was going to write about, who the protagonist was, or what he was mainly going to write about. I still didn't understand this, and with his introduction, I was even more confused.

I feel that the setting is relatively novel, and the plot direction is a bit unexpected. I'll sit down and look forward to it.

What are the first three chapters? Just start reading from Chapter 4