Here is some news about LYF being chosen for XLN posted by another fan in response to my question about LYF being chosen as XLN:
Well that's what I read in the Chinese World Journal (Shi Jie Ri Bao). It sounded pretty solid that the china production company wanted her, but you never know if they'll do last minute changes.
I agree with all of you that she has this innocent, young and sweet look to her, so it's gonna be a real challenge for her to be indifferent and icy on the outside. Nevertheless it would be extremely intriguing to see if she can make a performance breakthrough via this role since she obviously already garnered quite a few fans from doing Demi-god Semi-Devil.
Jing Yong (the novelist) was mesmerized by her looks and demeanor; he said that when he wrote the character of Wang Yu Yen, he didn't know such a beauty actually existed in the world until he met Liu Yi Fei.
I guess JY hasn't seen other beautiful actresses because I think LYF's looks really typical and nothing unique or special...