I visit M50 regularly. You can read all about it here and here. Some more photographs soon from Moganshan Lu and M50.
I’m not sure if this is by François Morellet or not.
If not then it is certainly inspired by (copied from?) him. It was in the Himalayas Centre.
The Himalayas Centre is quite Gaudiesque inside and outside.
The architect is Arata Isozaki, known for his work on the Barcelona Olympics Stadium and Los Angeles Museum of Modern Art.