Yin and Yang in Equal Measure: The Way of Central Harmony and the Equilibrium of Day and Night at the Spring Equinox
This article offers a multi-dimensional exploration of the Spring Equinox (Chunfen) among the Twenty-Four Solar Terms, drawing on pre-Qin Confucian and Daoist philosophy, the original meanings of Chinese characters, and astronomical phenomena. By analyzing the character 'fen' (divide/equalize), the sun's alignment with the equator, and seasonal signs such as the return of swallows and the onset of thunder, it reveals the profound wisdom of 'central harmony' and the unity of Heaven and humanity embedded in the equinox's equal days and nights.
Chapter Twelve: Cultivation of Body and Mind -- Spring Equinox Health Cultivation and the Way of "Peaceful Centrality"
I. "Take Balance as the Standard": The Guiding Principle of Spring Equinox Health Cultivation
The Spring Equinox's "equal days and nights, balanced cold and heat, yin and yang in equal halves" is not only the state of Heaven and Earth but also provides the most fundamental guidance for human cultivation of body and mind. If there is a single guiding principle for health at the Spring Equinox, it is ping -- take balance as the standard, prize harmony, and bring body and mind to the state of "peaceful centrality" that accords with Heaven and Earth at the equinox.
II. Harmonizing Yin and Yang: The Impartial Way of Body and Mind
The core of Spring Equinox health cultivation is "harmonizing yin and yang." At this critical juncture of yin-yang transition, one should neither excessively warm and tonify (adding too much yang) nor excessively cool and purge (suppressing yang too much), but keep yin and yang in balanced harmony.
This extends to the emotional dimension as well. At the Spring Equinox, with yang rising, emotions may fluctuate -- becoming either over-excited or blocked and stagnant. The Way of cultivation requires maintaining emotional equilibrium -- this is "when aroused and all attaining their due measure, this is called harmony" in the realm of emotional health.
III. "Retire Later, Rise Earlier; Walk Leisurely in the Courtyard": Following the Qi of Generation
In spring, one should follow the rising yang by retiring somewhat later and rising earlier, and going outdoors for gentle exercise -- extending the body and letting yang energy flow, in accord with the generative qi of Heaven and Earth. This too is the Way of the Center applied to daily life: one should be active (following generation) yet gentle (avoiding excess).
IV. "Nourish the Liver and Ease the Spirit": Cultivation Under Wood Virtue's Reign
Since mid-spring belongs to Wood, and the liver corresponds to Wood in the visceral system, Spring Equinox health cultivation particularly emphasizes nourishing the liver and easing the spirit. The key lies in the character shu ("ease, extend") -- extending the body and easing the emotions, keeping the mood open and bright, avoiding depression and rage. Yet even this "easing" must observe the measure of "central harmony" -- liver qi should be eased without becoming overexcited. This once again resonates with Dazhuang's admonition to "not tread where it is not proper."