The Chinese Empire covered part of Japan long ago. The Japanese had to pay tribute to the Chinese Emperors for many centuries. Naturally they affected the Japanese culture.
The Japanese Language even has Chinese Characters (known as Kanji) in it. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.