Can we see the Ming Tombs and then the Mutianyu section day tripping from Beijing on Public Transit?

Hello, Leisa, it is hard. The two attractions are not in the same districts although both of them are not far from Beijing. They are in two directions.
If you want to see the great wall and Ming Tombs in the same, you can choose to go to Badaling Great Wall. Then you can finish your trip in one day.