Death's End

I am lost for words after finishing the final entry of this trilogy - it took every expectation I had of it, destroyed it to smithereens, and came up with something unprecedented.
With this concluding work, Cixin Liu has cemented his place among the greats - this is the best hard sci-fi work written since Asimov's ‘The Last Question'. The works of sci-fi landing in ‘unprecedented scope' was generally mutually exclusive with ‘actually mind-blowing for once', but Cixin Liu has demolished those barriers effortlessly.
It moves so much beyond its initial foundations of first contact that it is barely recognisable - but it is all the more better for it, as it is not chained to a particular niche. Exploring concepts as varied as dimensional flattening and time warping, and making sure that the plot stays on track, is an underappreciated talent that potential sci-fi writers would do good to take note of.
This series is the closest I've seen a sci-fi series come to the platonic ideal of ‘sci-fi' - the literature of ideas. The trilogy is a must read for anyone who has ever read sci-fi and would like a more serious take on it.