Nanjing Massacre was created by Chinese Nationalist Party, KMT, along with US for the International Military Tribunal for the Far East.
This forged story was reborn in '80s and fostered by CCP in '90s .
After the cultural revolution, 80's was the period of various factions within CCP especially between reformer's group like Hu yaobang(胡耀邦) and conservative power like Li Peng(李鵬) and Jiang Zemin(江沢民).
This conflict grew up to anti-Hu Yaobang movement.
He was well known as a pro-Japan (pro-Democracy) statesman.
"Nanjing Massacre" was the propaganda used by the conservative dogmatists of CCP as anti-Hu Yaobang = anti-Japan (= anti-Democracy) movement.
In fact, "Nanjing Massacre Memorial Hall" was not built until in 1985.
In addition, no country including China had blamed Japanese prime-minister's visit to pay homage to the war dead at Yasukuni Shrine until this same year.
Ex-PM Nakasone (中曽根） confessed later that he could not help but consider the political position of Hu yaobang (胡耀邦) in CCP and suspend his visit at Yasukuni.
After the Tiananmen Square protests of 1989, Jiang Zemin (江沢民) strengthened ｐatriotic education ( = anti-Japan education) for their young people in '90s.
The number of victims in Nanjing has increased from 3 thousand (identified each by name at the time) to 300 thousand of nameless by the leadership of Jiang Zemin.
We, Japanese will never forget there were the Chinese people who fought for freedom and democracy and against the conservative dogmatists in1989.
Note; I don't mean to say there's no massacre in China at the time. One thing I want say in this video is Chinese version's "Nanjing Massacre" is not only an absolute nonsense story but also a malignant propaganda by CCP.