The Secret of Autumn Leaves

I've been stuck for several years and don't know how to continue the story. No matter how I write it, I'm not satisfied. I've already forgotten most of the old settings and the writing style I used back then. Hopefully, one day I'll be able to finish it.

Before the heroine died, she received a book.

Then... she died.

She transmigrated into the book and became He Lanye.

From then on, He Lanye had no choice but to admit that the world was truly insane!