Hahaha! Japanese historian proved that Diaoyu belonged to China.

http://en.people.cn/n3/2017/0824/c90000-9259862.html

This is really funny.  More and more Japanese are fed up with its own government.

First, NHK published a documentary to prove that Unit 731 existed and committed atrocities that the Japanese government denied.

Next, Japanese historian provided an ancient Japanese map which showed that Diaoyu belonged to China.  This proved that the USA and Japan robbed Diaoyu from China after WW2.

The historical facts are present everywhere in the world and it's getting harder for Japanese to change its unglamorous history.