https://www.theguardian.com/books/2017/jan/13/china-rewrites-history-books-to-extend-sino-japanese-war-by-six-years
Many historians have accepted the earlier date, but this is an attempt to rewrite the Communist effort in pre-World War II.
Probably just the start.
Stop trying to confuse people with the truth. Just give them enough to be obedient-- what I used to tell the wife about the kids.
I once told a Chi-com gentleman that I thought the Chinese Nationalists did most of the fighting against Japanese forces in China, before & during WW2.
You should've seen the indignant rage. He was absolutely adamant that the Chinese Communists did it all, despite those filthy Nationalists' attempts to make them lose. ;D