It's taken me a few days to prepare myself to write this review. This book has taken all my expectations of it and flushed it down the drain. Then it gave me some outstanding moments in return. Moments of human accomplishments, monumental failures and some incredible moments of love that was never meant to be. 
 Beware, minor spoilers ahead. Major ones are hidden. 
 When I finished the book, I was drained. Throughout the book I kept hoping against hope that please, let something go right for these people, at least one thing. From hoping for the survival of humanity, I started feeling (view spoiler)[hopeless because of what the dark forest had done to the universe overall. (hide spoiler)] It slowly started to sink in and at that point I just gave up hope. The world out there was hopeless and how could puny humans stand up to that? 
 When Trisolarans showed a fear of humanity's progress in science and used Sophons to stop that progress, I felt awed. An alien species was fearful of what humans are capable of. I knew humans would find a way around that lock and build the weapons that were needed to fend off the Trisolarans. 
 Even though the lock stayed in place, humans built a massive space fleet and saw their hopes shatter against a single Trisolaran probe. It was time to feel awed by what a Trisolaran battleship would be able to do if their small scout did this. The battle of doomsday was an eye-opener for humans. It showed the effectiveness of Trisolaran Sophon lock. It made me mad. Luo Ji was the only reason humans weren't completely wiped out back then. 
 In comes Cheng Xin. Suddenly humans are (view spoiler)[on a quick trip to the dump. It terrified me watching the scenes unfold as billions of humans are sequestered in Australia. And even more terrifying when Sophon announces what I called "The Hunger Games" as a method of survival for the rest of humanity. (hide spoiler)] For the Trisolarans to do this was maddening. I felt bad for Cheng Xin. The weight of the world was on her shoulders and the consequences weren't fictional anymore. 
 I whooped in joy when (view spoiler)[Trisolaris went boom. Even though you knew Earth would be next, there was a feeling of things coming a full circle. (hide spoiler)] Trisolarans were responsible for everything that happened with Earth. They were eventually responsible for (view spoiler)[their own destruction. I didn't feel a bit of remorse for them. (hide spoiler)] 
 What comes next can only be described as a slow dance in a burning house. (view spoiler)[ The dimensional attack on the Solar System was one of the best chapters of the book. The details of the attack from discovery to realization are simply amazing. Humanity's first Curvature drive and its final sprint to save 2 humans was another exhilarating moment. Watching all the other STL ships get flattened into 2D and escape the final death of humanity crushed my hope. (hide spoiler)] 
 Its only later that you realize that the burning house is in fact the entire known and unknown universe. (view spoiler)[ The realization that the universe was one 10 dimensions and that due to the dark forest, it was now down to 3 dimensions and going to become 2 dimensions soon was one of the most scary things I have ever read. How could anyone do this!? The realization that there were 1.5 million known intelligent species and so many of them took part in the destruction of the universe is astounding. (hide spoiler)] Would humans have joined in the dark forest and hunted other species if the Trisolarans never threatened them? I think they would have. 
 Time to end this review. I would give this entire series a 6/5 if it were possible. Thank you Liu Cixin for this story. Reading these books was one of the most fantastic experiences I can recall.