China's military parade last week was very anti-Japan. Of course, Japan did invade China during WWII. That's not being forgotten by the current leaders of China. China made a big point of their land-based anti-ship missiles, which were featured prominently in the parade.
all else aside on the territorial disputes, i feel abe and his associates continually look past their genocides and atrocities in WWII, continually going to war memorials and celebrations of these same japanese that attacked US and committed the acts during WWII.
so china leaders definitely have a reason to hold a grudge and not forget.
https://en.wikipedia.org/wiki/Second_Sino-Japanese_War
Started well before (1937) and ended a month later, to be precise.
It's easy to read the newspapers about the govts of the world rattling their sabres at one another; what the people actually feel is often quite different.
Its tremendous versatility is one of the main reasons it became so expensive and difficult to develop: jack of all trades, master of none.