Ent.sina has made a report on a daily shootings of the film in November. Here are small extracts from the article :
Donnie Yen, Takeshi Kaneshiro and Tang Wei are in the new martial arts movie by Peter Chan that is being filmed these days in Tengchong. The filming is not high lightened in media but on October 30 journalists were capable to make shots of Takeshi Kaneshiro on the staging in his grey robe and a hat. Also reporters could recognize Ken Watanabe. So far it is unknown what role will he play in the film.
On October 21 it was found out the shootings would be held in Tengchong near the waterfall. This area is popular among tourists and that is why there was a small conflict between the visitors of the waterfalls and Peter Chan's crew. It happened so because when the visitors of the Tenchong were watching the falls from the viewing platform they noticed Takeshi Kaneshiro and started photographing him. In such an emergency crew had to stop filming and take Takeshi Kaneshiro away from the scene.
In the aftermath shooting managers just banned the visitors from coming to the viewing platforms saying that was to prevent people from falling off it.
Also there were descriptions of the Kaneshiro's and Yen's roles, plus some ideas on Ken Watanabe participation in the movie.