Mansa Musa, to add onto the fact that Shanghai is keeping in line with the colonial styles of each district, doesnt mean it doesn't have its homegrown styles too. The restoration of the Old City, not to mention the watertowns such as Qibao and Zhujiajao are entire cities of traditional Chinese architecture within Shanghai.
Also please bear in mind the International Style of modernism is called that for a reason. It's not like the West is building using new versions of cathedrals, steeples, columns or mansard roofs -if anything modernism sources its aesthetics from the functionalism of zen architecture in Japan, and the mud brick, white painted blocks of Morocco/ North Africa that the early modernists went to study.
Thirdly, there is a huge amount of homegrown Chinese firms, some of them Pritzker Prize winning operating both in China and abroad, including many big names such as MAD, X+Living and META. Chinese firms are actually known for combining traditional and contemporary elements.
Go to any Chinese city and you will see Ye Olde Town being restored, plus a huge raft of new architecture with local styles and aesthetics still, flowing with the cutting edge designs.