Preparation for martial magic:

"Sit facing the north.

Palms up.

Concentrate and free your mind.

Focus on the dantian (field of elixir), the seat of life force energy in the body. [My Note: Your genitals.]

At the break of the life force, palms together in front of your chest. [My note: As soon as you are aroused.]

Point the fingers to the front."

--Zhou Botong, in The Return of the Condor Heroes