Asian Watercolor

I usually avoid buying Asian paintings because I have no idea how to tell if they are worth something or not.
I know antique scrolls are valuable but there are some contemporary Chinese artists that sell for ridiculously high amounts.
http://www.christies.com/lotfinder/salebrowse.aspx?intsaleid=25640&viewType=list


I don't think this one is anything special but any thoughts on it?

 

It's appealing, to me... airy, romanticized, dreamy, lots of depth...