That dance! Love it! I've lost track of how many times I've watched it.
That voice! It's unmistakable (cos she's one of my fave artistes).
This is the theme song of C-movie, One Step Away 《觸不可及》.
Here's the YT video minus the applause. ENJOY!
Faye Wong 王菲 - Unattainable Love 愛不可及 [Official Music Video/Theme OST of "One Step Away"《觸不可及》]
Btw, it's a good watch, if you like this genre and era. Brings to mind another movie that's similar but more interesting and intense.
Choreographer-cum-Dancer Zhang Ao Yue named their performance piece as 《迂·蓝》 Swirls: Blues (i.e. dancing/swirling in blues). That song is a blues song.