Let's compare:
View attachment 31804
The similarities are pretty obvious.
Secondly, I doubt that the supposed H-20 design as shown would support super sonic.
Its just a fan-art, well, and in this case, it is not even count as an "art", it is basically a distorted B-2 pic.
And yes, flywing can be super-sonic, althrough I doubt China will go with supersonic flywing design for the reasons I stated earlier.