From shanghai, what are options to see Great Wall and how to get their for a day?

The most famous section of the Great Wall is Badaling Section . From Shanghai, you can fly to Beijing. Then take Airport Express Train to Dongzhimen Station, get off and change to Subway Line 2 to Jishuitan Station (Exit A), and then walk to Deshengmen Arrow Tower to take Bus No. 877, 919 or 880 to the wall. It is a hurry trip during one day.