Circulating Qi

Inscribed on a piece of jade dating to around 380 BCE, this is one of the earliest known descriptions of Daoist breath cultivation.

To circulate the Vital Breath:
Breathe deeply, then it will collect.
When it is collected, it will expand.
When it expands, it will descend.
When it descends, it will become stable.
When it is stable, it will be regular.
When it is regular, it will sprout.
When it sprouts, it will grow.
When it grows, it will recede.
When it recedes, it will become heavenly.
The dynamism of Heaven is revealed in the ascending;
The dynamism of Earth is revealed in the descending.
Follow this and you will live; oppose it and you will die

– Xingqi (translated by Harold Roth)
Luminous Dharma