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An In-depth Interpretation of Lixia in the Twenty-Four Solar Terms: Philosophical, Philological, and Astronomical Perspectives

This article provides an in-depth analysis of Lixia (the Beginning of Summer) through the lenses of pre-Qin Confucian and Daoist philosophy, etymological roots, and astronomical observation, elucidating its significance as the critical juncture where the cosmic momentum shifts from "birth" to "growth." By examining the evolution of the character "xia" (夏) and the movement of the star Antares, the study reveals the profound wisdom behind the ancient mandate of "respectfully bestowing the seasons" and the harmonious worldview of unity between humanity and the cosmos.

Tianwen Editorial Team May 6, 2026 13 min read PDF Markdown
An In-depth Interpretation of Lixia in the Twenty-Four Solar Terms: Philosophical, Philological, and Astronomical Perspectives

III. Li (Ritual) and Summer

Summer’s correspondence with Li (Ritual) is deeply meaningful. Li is the order of behavior, just as summer is the season where all things find their proper order and place. In the heat of summer, trees grow toward the sun, roots stretch deep, and leaves expand; each creature follows its own "ritual" of growth. Xunzi argued: "Ritual is the order of Heaven and Earth." Order is not artificial; it is the manifestation of the Dao. Summer’s exuberant, organized growth is the cosmic embodiment of Ritual.