赤

The glyph operates across two primary axes:

1. Chromatic: An intense red associated with fire, blood, or raw earth. In cosmological contexts (Five Elements/Wuxing), it serves as the coordinate for the element Fire and the direction South.

2. State-of-being: A lack of covering or possession. This includes physical nakedness (e.g., bare feet or body), material poverty (stripped of assets), and moral transparency or sincerity (a "bare heart" stripped of guile).

Primarily functions as an adjective. When modifying nouns that typically wear clothing or coverings, it acts as a privative denoting the absence of those coverings.

When translating "red," contrast 赤 with 朱 (the curated red of lacquer and officialdom), 丹 (the mineral or medicinal red of cinnabar and alchemy), and 紅 (a later term often associated with beauty or flora).

Fanqie reading: 昌石; Tang-period reading: *chiɛk. Semantic variant: U+2418D.

The association with the fire radical emphasizes heat and combustion, which corresponds both to the color of flame and the conceptual process of stripping things away.