I sure loved out our visit to China, even Beijing was a lot better than I thought it would be, but man… I do not have fun processing the sky in my Beijing shots. Even at night it is kind of a dull grey and very noisy result. The sky in my posted image is still rather bland, but I had to use a lot of blur tool on the sky to clean it up. I would definitely look into getting a polarizing filter for any lenses you take with you to Beijing.
CkTravel Blography 
I think the sky works in the image, though. You want the eye directed into that crazy design. The sky and the land are nothing more than backdrops.