光是形式的伟大揭示者。
Light is the great revealer of form.
The laws of physics are the same everywhere in the universe, and that is a profound truth.
世界不一定要这样。事情可以不同。
指修炼内丹时阳气初动的微妙时刻，象征天地未开、万物未生的混沌状态。