Does anyone know what's the background of these wind-tunnel models? Are they just to study different configurations or are they related to a certain project?
The one in the right corner however seems to be SAC/601 Institute's design for the heavy fighter that became the J-20.
Via
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Also, here is an older image of the same model.
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The guy in the top photo is Li Tian from the SAC, or the father of Chinese stealth. None of the images you posted appears to be J-20's predecessor.
Sorry if my post was misleading, I never meant it is related to the J-20, but to SAC's proposal, which was later won by CAC with the type that became the J-20. Pardon for the confusion.
In that case the model in question does appear to be the Snowy Owl.
Pardon to ask again, which one? The one in the right lower corner or these two on the left?
Lower right.