This video starring Grand Master Wang Peisheng is one of my favourite Tai Chi vids you can find on the tubes. Luckily, you can watch it translated by a guy who spent many years in China studying martial arts, which of course means that it’s a pretty accurate translation. Even if it’s a staged demonstration, you can see that real skill shines through.
Wang Peisheng was well known for real fighting skills and he has proved himself to be a warrior as he survived many years in prison. Here you will have small hints on important points in Tai Chi like that Double weightedness and use of force prevents you from reading your opponent. In Tai Chi, softness and relaxation is not just something health oriented. It has a most practical use for real life combat situations.