Can I leave Shanghai Pudong airport between flights

Are you going to take an international to international flight transfer at the airport? If so, you are qualified for the 72h free visa policy, so you can get out of the airport. But before departing, put forward your plan to your airlines and they can declare this to the Immigration Inspection prior to your visit. Upon arriving, you will be granted a transit permit, with which you are allowed to get out of the airport.