Started out strong....then, it became apparent there was very little chemistry between the two lead actors, Allen Ren & Fair Xing. In fact, it became painful to watch. AND, dressing Fair Xing in childish cloths to make her romping around to look like she was always "cheerful" was rather ludicrous. The mechanical heart theme was lame. Why did Allen Ren, who is a very accomplished actor, sign-on for this drama? Fair Xing was outstanding in My Little Happiness, so not sure why she signed-on either. Overall, I'm must be a lone wolf who didn't like this drama, as it has a 8.2 rating. Do not recommend.