What's the Ascenario in the Third Book of the Three Body Problem?

The first book in the series is called the three body problem. I've heard them described as chinese star wars. Well, you just describe most marvel movies so and people let their kids watch te heltim,. sounds like we've moved past that point. It's lots of alien invasion and catastrophe for humanity in this book, though. And death's end is the last one. Wel cheery titles. O, they're super be sellers. They were translated into english by ken lo, who's also an excellent, award winning science fiction writer and hugely popular.