Arrival on 6 Nov 2014 at 14:15 PM, departure on 9 Nov 2014 at 10:55 AM, 72 visa free ??

Dear Sir/Madam, I will be arriving in Shanghai (PVG) on Thursday 6 Nov 2014 at 14:15 PM and will be leaving Shanghai (the same airport PVG) on sunday 9 Nov 2014 at 10:55 AM, do I need a Transit G? Or Can I have a 72 hour free transit in China ? Many thanks for your answer