I used what happened to him as a lesson to my students and about their training ...
Agree! If you have trained MA all your life. In one fight, your opponent just knock/take you down within 10 seconds. What can be worse than this?
That clip can teach us many things:
You should develop
1. ability to run your opponent down.
2. skill to deal with your opponent's run down skill.
3. effective knock/take down skill.
4. footwork and move in circle and not just standing still as a sitting duck.
5. ...
If that Taiji guy has hay-maker skill, the outcome could be different.
- Spin your body,
- Move yourself out of your opponent's striking path,
- Knock down your opponent's straight punch, and
- Hay-maker on the back of your opponent's head.
When your opponent comes in and tries to knock your head off, if you just swing your arm into a 45 degree downward hay-maker, you will be surprised how effective your hay-maker can be.