Shanghai is part of mainland China. I don't think it has the kind of autonomy that Hong Kong or Macau have.
That is most definitely the case, only a schmuck who thinks eating at Panda Express qualifies them to be an expert on China would believe otherwise.
Speaking of China on this lovely summer Saturday night, expect lots of answers/details about Shanghai Disney to be released on Wednesday morning (our time).
If it doesn't happen, then realize it's because of the Chinese and Bob Iger's lack of control of the project/resort.