Tea Fight (Dou Cha) was released in 2008 and directed by Yeming Wang. I haven’t seen it myself yet, but will very soon. It’s a curious and fast paced melange of Japanese and Chinese tea cultures merged into contemporary and legendary story lines. It appears to be quite overblown, and a little absurd, but there are parts of it that look awfully pretty.
The dialog is in Mandarin and Japanese and it was filmed in Taiwan and Japan: Taipei, Kyoto and Tokyo specifically. Excerpted from a comment on IMDB:
“And this is just my personal preference, but I find it extremely annoying to have actors speak in their non-native languages. I speak both Japanese and Chinese, but I had hard time understanding what they were saying, not to mention it was weird how every main Chinese character somehow knows Japanese and vice versa. Even the some of the Chinese actors were Cantonese-speaking HK actors speaking in heavily accented Mandarin. The tea master (I think his name is Chin Shih-jie) did spoke absolutely fluent Chinese and Japanese though, it was a pleasant surprise.”
The fact that it’s a film called “Tea Fight” is really enough to get me to see it.