Both the J and the K versions blew me away, I've watched them both multiple times. This version failed at pretty much every level to drag me in. The plot didn't make sense to me - just too complicated to flow and the relationships just didn't ring true enough. Both Xhou Xun and Chen Si Nou had the acting chops to have really pulled it off but the script left them with too little to work with.
The way they reworked the elements of the story - the set up, the escape etc. was just too disjointed and too quick. By the time half way came I'd lost interest - could have been great.