Dear Thread Starter:
I am a very old man (76), so I remember reading about the great suffering of the Chinese people when their country was invaded by European nations and by a neighbor in the 19th and 20th centuries.
I think that you young Chinese are very lucky. Since 1945, there have been no foreign invasions of China. Now that China is strong, no other country will ever invade your country again.
I am 99.99% sure that there will be NO war with your neighbor over the Diaoyu islands. I am confident that the leaders of your country and of your neighbor realize that war would be absolutely crazy.
Let's not forget that there were two world wars in the last century (1914 - 1918 and 1939 -1945). Millions and millions of people were killed and millions and millions suffered horribly. Young Europeans now live in a Europe where war is now almost impossible.
Hopefully, someday, war will also become impossible in other parts of the world.
P.S. I agree with you: the Nanking (Nanjing) incident was horrible beyond words. Someday, I hope the new generations in your neighbor will apologize.