hmm, seems like Deepin is not using a 64-bit bootloader, that’s why you see the black screen. You can boot from a second USB having rEFInd and then start Deepin from there. I agree, Deepin is some really nice eye-candy and doesn’t require much customization after launching, however it’s quite heavy on resources.
I would suggest to run a lighter DE on the ezbook 3 pro like XFCE or better a WM like i3-gaps. If you still want to run the Deepin Desktop, I recommend to use Arch Linux. Then you can decide which Deepin apps you want so you don’t have to install everything. Th Deepin packages in the Arch repos are also maintained by one of the core developer of Deepin.
Let me know if you get stuck, happy to point to right direction.