I could not put this book down. Seriously. I need to be writing my thesis right now but instead I dedicated nearly the entirety of the last 24 hours to obsessively reading this book. It was insane! I always thought a completely unsympathetic main character was impossible to write but R.F. Kuang managed to do it and that is absolutely a compliment. AND SHE DOESN'T LEARN ANYTHING! I can't figure out why this book is so good because it really shouldn't be, but it is. 
I am a little concerned with how this will translate to a movie as much of the book is the narrators insidious internal thoughts, but I imagine it will be something like You, probably? Hopefully they don't try to make audiences like June.