It's not that outward expression is bad—when it's time to explode, you certainly do need to. But in a ninety-minute film, it's impossible to be at the explosion stage all the time. There's hibernation, rises and falls, and the lingering tail-end. These stages require meticulous and rich transitions.
Thinking this way, although she did perform in "Storm" slightly better than Shang Feifei, that was partly due to the advantage of her character setting and also her face. Her face would be the focus in any film unless she deliberately tries to look ugly. In explosive scenes, she has more presence and vitality than Shang Feifei. However, in some delicate transitions, she's slightly more rigid compared to Shang Feifei. But her appearance is so stunning that audiences overlook those details, only seeing her face and performance.
