ياقرة عيني
And it’s bigger than the F-22 Raptor it rivals, so it can carry more fuel and more weapons, extending its lethality deep into enemy territory.
https://www.wired.com/2016/11/china-j-20-fighter-jet/
http://finance.yahoo.com/news/chinas-stealthy-j-20-fighter-171139077.html
First, due to its larger size it will carry significantly more internal fuel, so it will have a longer range and be less dependent on vulnerable aerial refueling tankers in the vast Asia-Pacific. It also has larger internal weapons bays than either the F-22 or F-35, so it will be able to carry larger, longer-range missiles or a greater load of standard air-to-air and air-to-ground munitions than either of the US designs.
http://edition.cnn.com/2016/11/01/opinions/chinas-new-j-20-stealths-opinion/