Scenes like this put a big smile on my face. Horrid acts were committed by all sides during the war, but as soon as hostilities end people who were once enemies can become the best of friends. Once China and Japan were friends, may they take inspiration from this picture and similar scenes and forgive and forget.
Indeed, it is a lesson for all. Aside from discussions with Chinese posters here (many of them are right wingers), I actually have a healthy amount of Chinese-American friends and associates in a personal level. Many of them are not as ultranationalistic as the ones you find here. Or with an agenda.