Shame the face is blotted out. The physique is similar to a woman with the Weibo handle zhudaxiang. If it is her then it is very likely legit.
Legit in what way?
The model looks like the same aircraft from modern weaponry, down to almost the exact details.
I find it very, very suspect and doubtful that the PLA would allow the real configuration of the H-20 to be released either via modern weaponry or via a picture of a model.
I am more tempted to say that this is perhaps just a model form of the educated guess design of the H-20 from modern weaponry magazine.