Qi Style Tong Bei 祁家通臂拳 - "Dagger"

Qi Style Tong Bei 祁家通臂拳 - "Dagger" - Duan Gun
Technically they call it "Duan Gun" and use a short stick. But this reminds me too much of Knife Fighting similar too some Italian Stuff I was fortunate to do for a short time.
The name of the Master is Wang Da Ming.