When I came to Japan I found it is really very similar between China and Japan. Our hair and skin has the same color, although Japanese always dye their hair into golden. And a Chinese can live in Japan even he/she can't speak Japanese, because the Japanese characters are similar to Chinese. And many Japanese festivals are the same as Chinese. There are so many similarities between these two countries.

Of course there also exists much difference. For example many Japanese are still very loyal to Buddhism. But in China it is different. As for cultural differences I think there is no too much. But the living custom is a little different to Chinese I think.