Under certain conditions, it is possible to transit in Shanghai without a visa. Nearly all nationalities do not need a visa if the transit is under 24 hours. Certain nationalities can even transit for 144 hours (nearly 6 days) without a visa.
For a transit under 24 hours, immigration can sometimes (based on the duration of the layover) let you leave the airport. This videos show you how to see the key highlights of Shanghai in less than a day.
What is shown in this video was visited from mid-morning to early evening.
To assist you for this short visit, get a good subway map (like this one: https://exploreshanghai.com/metro/ ). And watch our video on how to ride the subway here: https://www.youtube.com/watch?v=56XsCiHkaA8&t=24s and our video on how to ride the Maglev train here: https://www.youtube.com/watch?v=6rK9d0cZlEI&t=49s
Visit our channel for more videos about travel in China: https://www.youtube.com/channel/UCHfhu5RwuNrVu_8H8l62uxw?view_as=subscriber