It says north sea and south sea air force are having air defense exercise on yellow sea. They mentioned "freedom defense" (literal translation) I am not too sure what is the actual military tems, but they are meant that they can engage however they want. 2 J-8 (red team) as defense vs 1 J-11 (blue team). The first sortie, J-11 manage to use jammer and escape (couldn't hear clearly after if J-11 manage to kill off the J-8). The J-8 pilots (I think they mention that he is a squadron leader and a veteran) states that this give them the opportunity to hone their skills and properly deploy tactics (they made a mistake during the first sotie as the leader mentioned) to ensure to victory when the first opportunity comes. 2 hours later, blue and red team take off again (missing what the announcer was saying) red team this time was able to track and lock on. There was 10~20 sortie. The training was mostly to efficiently use ground control (plus radar) and EWAC in a 2 on 1 situation