What are the various J series aircraft developed by China, China's independently developed

From the service of the J5, 6, 7, 8, 10, 11, 15, 16, 20 series and improved, as well as there is the development but ultimately off the J9 and rumors of 13, as well as prototype test flights of the J12, the real meaning of the independent development of the should be considered as the J10, 20 it, some will say that the J10 is the xx countries secretly help, one of the reasons is to look like, really funny, look at the earliest J9 form of the proposed The first J9 was the shape of the J10 and J20