China's J-10 fighters test fuel drain system

http://eng.chinamil.com.cn/news-channels/photo-reports/2013-01/05/content_5168715_4.htm

http://eng.chinamil.com.cn/news-channels/photo-reports/2013-01/05/content_5168715_5.htm

http://eng.chinamil.com.cn/news-channels/photo-reports/2013-01/05/content_5168715.htm