This is in fact the Westin Bonaventure Hotel in Los Angeles, constructed 1974-76. It featured in many movies and tv shows, including Buck Rogers in the 25th Century. And this might quite possibly be the origin of my perception that the richer Chinese cities look "like Buck Rogers".
I vaguely think that's changing though. Available materials, maturity and purpose of designers... who knows?
My first thought was "no" actually. It seems like the majority of the building here are square shape on average.