Points about Taijiquan from Master Chen Zhonghua

1. At a higher level, power cannot be seen.
2. Movements that can produce power cannot be seen.
3. Power must come from the ground, or whatever that have the property similar to the ground.
4. The body only acts as a conduit. It should provide a structure, a point of reference, or an aiming devise. The body should not be part of the power. It should no contain power.
5. Taiji is the art of making the opponent fight the ground, or something stronger than the taiji practitioner.
6. Whatever we want to do, it will appear to be the opposite. For example, we want to use the waist but in taiji movements, the waist should not move or turn too much. We want the hand to be strong but we cannot move the hand.

This came from:
http://practicalmethod.com/2010/02/chen-zhonghua-yilu-demo-on-oct-25-2009/#comment-52