Classic

Secret Song of the Eight Methods (Bafa mijue) about lü:

How to explain the meaning of lü?
To lead the other (yindao)
and let him come forward.
Following the other’s incoming force.
Light and subtle, without losing
contact or resisting.
The power ebbs out naturally (ziran)
into the emptiness.
Throw or attack follows naturally (ziran).
Maintain your own centre.
This can not be exploited by the other.

Translated by Freya and Martin Boedicker