As was said earlier, Peter Chan's "Wu Xia" is to be shown in Cannes since 11 up to 22 of May, 2011 but for five days only, as the Chinese sources say.
Source: news.night-ghost.com
Peter Chan intends to tell the world about the movie at Cannes, holding a press conference on the film and a premiere there. It is also said that Quentin Tarantino will join the premiere as a great fan of martial rats movies in hope to watch the remake of the famous Onearmed Swordsman.