Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Almost a classic!

I have read nearly all the great sci-fi classics (and certainly everything that has ever been awarded a Hugo or Nebula) and for 200 pages or so China Mountain Zhang was up there with the best of them. However, with 40 or so pages to go I knew something was wrong. Call me simple, but don't all novels have to have an ending? Even novels that are intended to be a series need an ending. China Mountain Zhang has none. Further, a number of the sub-plots following the lesser characters in the novel are never adequately tied into the main character.Ultimately, I suspect a sequel was intended. But if so, where is it? CMZ was first published in 1992 so if a sequel ever does materialise I suspect many of us will have to re-read CMZ to make sense of it all.