has the project started

"China is believed to have been conducting preliminary research on its fourth-generation fighter aircraft since the late 1990s. The fighter, codenamed by Western intelligence as J-XX or XXJ, was described as an advanced F-22-class twin-engine stealth fighter with extensive radar cross section (RCS) reduction features such as internal weapon bay. So far very little information regarding the project has been revealed, though it is understood that the two primary fighter aircraft design institutes of the China Aviation Industries Corporation (AVIC) Shenyang Aircraft Design Institute (601 Institute) and Chengdu Aircraft Design Institute (611 Institute) have both been working on their own designs to bid for the PLAs contract."

http://www.sinodefence.com/airforce/fighter/jxx.asp

so who won the design contender ,Shenyang Aircraft Design Institute (601 Institute) or Chengdu Aircraft Design Institute (611 Institute) ..

Any offical photos or Drawing

China is much less open about its defense contracts than the West, or even Russia for that matter (now that the Russians need foreign funding to help develop their next generation of fighter). There has been no official statement released on J-XX.

The reports that have leaked out, however, indicate that Chengdu won the design down-select. I've seen this coming from more than one publication now. Also, taking into account the description that Russian engineers and technicians have provided regarding the Chinese sites that they visited in support of various contracts, reports would appear to suggest that Chengdu has the more modern wind tunnel and supporting test facilities needed to develop an airplane like this.

In no more than 1.5 years I will show some spy photo's

It'll get developed as soon as the chinese have finished copying the F-22

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