I could say that 'The Harmony Silk Factory' is a stunning debut novel, but I'd be under-selling it. Using the word 'debut' implies that the book is good considering it's a first-time effort, that it's stunning by a different, less difficult set of criteria to other novels. This isn't a stunning debut - it's a stunning novel, no matter the author's publishing history.
The novel follows the story of Johnny Lim, a man of whispered reputation. No-one is quite sure if he's a hero or a gangster, a capitalist business man or a Communist leader. His story is told by three different narrators - his son Jasper, his wife Snow, and his friend Peter. Each relate part of Johnny's story, at times over-lapping and giving different interpretations of the man and his actions.
What makes the book work so well is the way Aw combines an epic, at time mythic, feel with wonderful small details. His chosen structure keeps mysteries alive until the end, and he writes wonderfully. The more I say the less you'll have to discover for yourself, so I'll keep it brief. What I will say is that if you're interested in the getting in at the start with an author who will become a big name in the future, order yourself a copy of 'The Harmony Silk Factory'.