Definition

Deng Yi (灯仪, Dēng Yí) is a Taoist liturgical rite in which lamps (灯, dēng) serve as the primary ritual implement. The term deng (灯) means "lamp" or "light," while yi (仪) means "rite" or "ceremony." Together, Deng Yi denotes the full ceremonial complex surrounding the ritual use of lamps in Taoist liturgy.

The lamp in Taoist ritual is not merely a source of physical light — it is a cosmological symbol. Just as light dispels physical darkness, the ritual lamp is understood to dispel the darkness of ignorance and karmic obstruction, illuminating the path for both the living and the souls of the deceased. Deng Yi is performed as part of major jiao offering ceremonies and stands among the most widely performed rites in the Zhengyi tradition.

Classical Sources

The primary sources for Deng Yi are the Shangqing Lingbao Dafa (上清灵宝大法), a Song dynasty compendium of Lingbao ritual methods, and the Lingbao Lingjiao Jidu Jinshu (灵宝领教济度金书), both preserved in the Zhengtong Daozang. The classical formulation states:

The texts specify that lamps must be arranged in patterns corresponding to the Big Dipper (北斗七星, Běi Dǒu Qī Xīng) or the Nine Palaces (九宫, Jiǔ Gōng). Each lamp represents a star in the celestial order, and the lighting sequence mirrors the soul's journey toward enlightenment and liberation.

Classification

Deng Yi is divided into two major categories based on its purpose within the Taoist ritual system:

• Jinlu Deng Yi (金筕灯仪) — performed for the living, seeking blessings, protection, and the extension of life. The lamps serve as celestial beacons summoning divine attention and favor toward the living community.
• Huanglu Deng Yi (黄筕灯仪) — performed for the deceased, seeking the liberation and salvation of souls from the underworld. The lamps illuminate the dark paths of the afterlife, guiding souls toward release from karmic bondage.

Zhengyi Perspective

In the Zhengyi (正一道) tradition, Deng Yi is among the most widely performed rites. The Zhengyi canon includes numerous lamp ritual manuals (灯仪科仪, dēng yí kē yí) covering ancestor veneration, soul salvation, community blessing, and the commemoration of the dead during festivals such as the Ghost Festival (中元节, Zhōng Yuán Jié).

The Zhengyi Dao understands the lamp as a living ritual participant — not merely a symbol but an active agent of transformation. When properly consecrated and arranged, the lamps create a field of sacred light that bridges the human world and the celestial realm, enabling the movement of divine grace downward and the ascent of souls upward.