So based on a limited pool of my Chinese friends and work there I have never experienced any resentment towards the British. Nor do the Chinese show anger towards Koreans who made up a significant proportion of the Japan imperial force. I'm aware of the history of China. It's telling that it was the USA after the war that played up Japan's aggression in China. Now the invasion was bad, but was it unique in its brutality? The 1850s civil war in China was way worse.

Why the lack of focus on Europeans not apologizing for what they did in Asia/China? Why the bombardment of films about the evil Japanese invading but not the Europeans?

I've seen anti-japanese posters in China never seen anything on Europeans.