Grain and Fire as Autumn: The Severance of Heaven and Earth and the Onset of Solemn Killing at Liqiu
This article offers an in-depth interpretation of Liqiu (Start of Autumn) among the Twenty-Four Solar Terms, drawing on pre-Qin Confucian and Daoist philosophy, the original meanings of Chinese characters, and astronomical-phenological perspectives. By examining the etymological roots of 'qiu' (autumn) as grain-and-fire, the astronomical coordinate of 135° solar longitude, and the image of Hexagram Pi (Standstill) from the Yijing — 'Heaven and Earth do not interact' — it reveals Liqiu as the pivotal moment when all things shift from 'growth' to 'gathering,' illuminating the virtue of Metal, the onset of solemn killing, and the ancient roots of the autumnal grief tradition.
Chapter Seventeen: Liqiu and the Cycle of the Four Seasons — From Growth to Gathering, from Autumn to Winter, in the Rhythm of Heaven's Way
I. Liqiu's Pivotal Position Among the Four Seasons
In the grand system of the Twenty-Four Solar Terms and the four-season cycle, Liqiu occupies a uniquely critical pivot. It is the turning point from "growth" to "gathering" in the four movements of birth, growth, gathering, and storage; the threshold where yang dominance yields to yin dominance; the watershed where heaven and earth shift from "interaction" (Tai, growth) to "non-interaction" (Pi, gathering).
Liqiu's pivotal position is especially evident in its mirror relationship with Lichun. Lichun pairs with Tai (heaven and earth interact, all things communicate); Liqiu pairs with Pi (heaven and earth do not interact, all things are obstructed). The two stand at opposite poles of the year's great circle — one opens growth (opening), one opens storage (closing). These two nodes together constitute the fundamental rhythm of cosmic life's eternal alternation between "opening" and "closing," "birth" and "gathering."
II. From Autumn to Winter: Gathering as the Foundation of Storage
Liqiu's "gathering" is not the endpoint but the bridge to winter's "storage." "Gathering" is the action (reaping, collecting); "storage" is the result (keeping, concealing). First comes gathering, then storage; gathering is the precondition for storage. If autumn's gathering fails, winter has nothing to store, and next spring has nothing to sow.
III. The Cosmic Guarantee of "Obstruction's Extreme Yielding Tranquility": Vitality Within Gathering and Storage
After Pi (seventh month) come Guan (eighth), Bo (ninth), Kun (tenth — pure yin). Yin qi keeps growing, all things keep converging, until the extreme of pure yin. Yet — this is the cosmos's deepest mystery — immediately after Kun (tenth month) comes Fu (eleventh month, "one yang returns")! At the very nadir of yin's dominance, a new thread of yang qi quietly sprouts from the deepest earth. The Yijing's Tuan commentary on Fu says: "In Fu, does one not see the heart of heaven and earth$21" And what is heaven and earth's heart$22 Ceaseless generation — nurturing light within the deepest darkness, sprouting yang within the extreme of yin, harboring new life within death's silence.
IV. The Four Establishments in Mutual Reflection: The Symmetrical Beauty of Liqiu
The "Four Establishments" mark the beginnings of the four seasons, mirroring each other in pairs. Lichun (east, Wood, Tai, birth) mirrors Liqiu (west, Metal, Pi, gathering) — one opens growth, the other opens storage; one faces sunrise, the other sunset; one brings the tranquility of interaction, the other the obstruction of separation. Lixia (south, Fire, toward Qian, growth) mirrors Lidong (north, Water, toward Kun, storage).
From Lichun to Lixia to Liqiu is the "opening" half-circle (growth, expansion, outward); from Liqiu to Lidong to Lichun is the "closing" half-circle (storage, convergence, inward). Heaven and earth breathe like a vast living being — spring and summer are its inhalation (growth, expansion); autumn and winter are its exhalation (convergence, storage). All things, within this great breathing — one opening, one closing — generate without cease, cycle without end.