Which is longer, the main line of Xumi Mountain or the forest book?

The most impressive task of the original God 3.0, I believe that the answer given by many travelers is not the fiend task of the grass god Naxi, but the book of the forest.

However, behind the long story of the forest book, besides the story itself, there are more hints from the original god. The hint is very simple, that is, "Behind Sumeru's indifference and rationality, there is deep romance and sensibility."