The two are very different in tone and approach to their adaptation of the novels. The Netflix version moves at a faster pace, seemingly trying to make sure it hits all the major plot points and revelations before viewers lose interest or wander off. The Chinese version moves at a slower pace and focuses more on character development and relationships among the characters. The Netflix version internationalizes more of the characters and action, obviously trying to appeal to as broad an international audience as possible while the Chinese version stays closer to the book in these respects. The Netflix version had a higher budget and this is reflected in what you see on the screen both in terms of locations and special effects. Both versions, out of necessity, consolidate characters and leave out large parts of the story, but this is more obvious in the Netflix version if you have read the books first. If you don't speak Chinese and dislike subtitles, then Netflix is the way to go. Also, if you haven't read the books and don't care much about how many liberties were taken with the adaptation, then Netflix is an easier watch. If you want something closer to the story as written, don't mind the subtitles and have a preference for character development over action, then go with the Chinese version. Or watch an episode or two of each version to start, the differences become obvious very quickly.