After a serious redesign 4 yrs ago and domestic engines being developped (WS-13) a serious order by the Chinese goverment is possible.
The Chinese Air Force PALF ordering a few hundred might cut it of from any export strategies. It should be no surprize IMO.
The project was "privately" financed by a state owned company & the "export" label may very well be a decoy..
Development of the AVIC FC-31 fighter is going well, and the aircraft is destined to enter service with the People's Liberation Army (PLA), according to its chief designer.