According to China Media, that Japan has been tracing China Marine Airplane from Navigation China's Territory Diaoyu island. using millitery fighter(see the2 nd Picture), China then sent Jet7 ,JetJ10 to monitor the situation, the problem is Japan does not want to talk over Diaoyu Island issue, not many years ago, Chinese could fish there at their will, but since U.S started to hand over Chinese Diaoyu Island to Japan in the 1970's,Japan started to pocess that island, America must make a mistake then,   wrongly gave.     Japan picked up American's mistake started to pocess Diaoyu Island. this was triggering whole Chinese Protest world wide.

Last Year Japan played a farce,Japan even puchased Chinese Territory Diaoyu Island.Japan's Move spawned numerious protest in All Chinese cities, China dertermined to protect its island, China voiced not step back as Japan caused problem over Diaoyu Island issue,

according history Japan 's ambition never stopped, today they take Diaoyu Island, tomorrow they will take whole China East Sea, they invaded many countries during world war two,caused tremendous harm and unforgivable damage to world people, Japan 's war crime has not been liquidated after the war, this is why Japan  today stiffly pocessed China's island.we have to fight, for China, Japan already invaded again since 1970's,the whole nation now is watching very carefully,holding breath inside. China Prepares for Japan's Challenge. we common Chinese do not know if Japan fires first what we will do.