Sergey Machulskis reviewed Death's End by Cixin Liu (Remembrance of Earth’s Past, #03)
Review of "Death's End" on 'Goodreads'
5 stars
Expected at least one expansion of the idea from the previous book, got a bunch of interesting and elegant twists.
In short, humanity's problems escalated from the scale of cities and dozens of years to the scale of the Universe and infinite time span.
Has a couple of holes in the plot, but I think it's even better with them.