72 hours transit visa for Canadian passport holder plan to transfer in Shanghai

Hi

I am in Dubai on tourist visa and have Canadian Passport. I want to go to Shanghai for 3 days (72 hours) and then go back to Canada. My flight ticket will be like this Abu Dhabi to Shanghai Etihad Airways and after 3 days Shanghai to Toronto, Canada Etihad Airways.

Will I be able get the 72 hours

Thanks