It doesn't really matter. The Chinese government knows exactly what happened in that time and so do the Japanese.

Germany has paid and appologized uncountably for the criminal acts during the Third Reich, and yet it is held against today's Germany whenever there is a chance for it.

Today's Japan hasn't done either of both and is also held accountable for its past whenever there is something to be made of it.

Regards
Kruska

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The world is grey - not black and white