According to Chinese-language news reports, a twin-engine J-20 prototype flew for 18 minutes on Jan. 11 from the “Plant 132 aerodrome” in Chengdu in southwest China. “Plant 132” is the designation for the Chengdu Aircraft Industry Group. A Chengdu J-10S Vigorous Dragon twin-seat fighter served as the chase plane.
Photographs of the flight test can be found on the china-defense.com and bbs.huanqiu.com websites.
Wendell Minnick by Fantake via Flickr