Many thanks to Ayako for posting the links.
On January 23, 2013 Ocean Hou posted a photo on his Weibo page with Keanu and Tiger. In Man of Tai Chi, Ocean Hou plays a fighter and he reported with the photo that he had finished his dubbing on the film.
Today Tiger has posted the same photo on his Weibo page and confirmed that all of the Beijing dubbing is complete. He also said that Keanu (Lee) worked hard and the audience would see his efforts.
Around the time the photo was taken, temperatures in Beijing were running in the teens. It looks like Keanu is wearing an insulated vest under his coat to stay warm.
Links are here and here. Many thanks to Ocean Hou for sharing his photo on Weibo and to Tiger for posting an update.
Update: Here is another photo that was taken in Beijing yesterday. The photo originated on Weibo. Many thanks to Nina for posting on twitter and to the fan who posted on Weibo.
