Yin or Water method versus Yang or Fire method

Does anyone know anything about the Taoist Yin or Water method specifically? What I have heard so far, is that the Water method aims to release everything that is not real, or relative, so all that remains is what is real, or constant, through whatever circumstances or changes that may occur.

The fire method on the other hand requires some act of conscious will or effort to try and create the kind of mind you want. The Fire approach to meditation essentially seeks to create some sort of hypnotic state, typically through the use of visualizations, which you may later choose to break down to free yourself from your conditioning.