Yao Ji — Fresh Fish Sacrifice in Chinese Ritual 腰祭
Paul PengYao Ji (腰祭, Yāo Jì, lit. "Straightened Sacrifice") is an ancient Chinese ancestral temple sacrifice in which fresh fish is the designated offering. The character yao (腰, variant 艇) means "straight" or "upright" — the fish must be perfectly fresh so that when cooked, its flesh remains firm, intact, and straight. A spoiled fish disintegrates; only freshness produces straightness. In the Zhengyi tradition, this ancient logic of offering quality as a measure of sincerity is preserved in the meticulous standards of Taoist liturgical preparation.
Yao Ji (腰祭, Yāo Jì, lit. "Straightened Sacrifice") is an ancient Chinese ancestral temple sacrifice in which fresh fish is the designated offering. The term is recorded in the Liji (礼记, "Book of Rites"), "Qu Li Xia" (曲礼下), where it specifies the ritual naming convention for sacrificial offerings to the ancestors. The character yao (艇, variant 腰) means "straight" or "upright," indicating that the fish must be perfectly fresh so that when cooked, its flesh remains firm, intact, and straight. The physical condition of the offering — its straightness — serves as a visible measure of the worshipper's sincerity and care.
The Liji (礼记), "Qu Li Xia" (曲礼下) records:
"Fresh fish is called the Yao (straightened) sacrifice."
Zheng Xuan (郑玄) explains: "艇, 直也。" ("Yao means straight.") Kong Yingda (孔颤达, 574–648 CE) elaborates:
"Fresh fish is called the Yao sacrifice. Yao means straight. For the sacrifice to have fresh fish, it must be fresh. When cooked, fresh fish remains straight. If the fish is spoiled, it disintegrates and fails to be straight."
The Liji passage is part of a larger section on the proper terminology for sacrificial offerings in the ancestral temple, where different offerings received specific names: the whole bull was called "yi yuan da wu" (一元大武), the pig "gang lie" (刚鬣), and various prepared dishes received distinct ritual names. The Yao Ji's naming logic — based on the physical characteristic of the offering — is typical of this system.
In the Zhengyi tradition, the Yao Ji's emphasis on the quality and condition of offerings is preserved in the detailed regulations for sacrificial provisions in Taoist liturgy. The Taoist ritual process specifies the exact requirements for each offering category, distinguishing between primary offerings (the five grains, incense, candles) and supplementary items. The principle that the physical condition of the offering reflects the sincerity of the worshipper — central to the Yao Ji logic — is maintained in the Zhengyi school's emphasis on purity and preparation.
The priest conducting a jiao ceremony must ensure that all ritual implements and offerings meet the prescribed standards, just as the ancient sacrificer ensured the fish was fresh and straight. The history of Taoist fasting and offering rites traces how this ancient standard of offering quality was absorbed into the Taoist liturgical framework. The founding of the Zhengyi lineage by Zhang Daoling established the ritual standards that continue to govern offering preparation at Longhu Mountain to this day.
