Gu Recipe

Biodata

Power Progression

Function and Refinement

Value and Secrecy

• Gu Recipes are the foundation of a Gu-cultivator lineage’s long-term prosperity and are guarded as closely held inheritances. Ordinary people rarely have any opportunity to learn them. 1
• A recipe’s commercial value includes both its output and its secrecy: widespread circulation allows rivals to refine the same Gu and research ways to counter it. 3
• Rogue cultivators may develop and sell the Gu insects produced by their recipes without revealing the recipes themselves. 3 5
• A Gu’s grade is generally determined by the grade of its main ingredient—the material expected to survive the refinement process. The documented hierarchy is low-grade, middle-grade, high-grade, and Supreme-grade. 5
• A longer recipe is not automatically stronger or more useful, but ancient recipes with immense ingredient lists can produce Gu capable of affecting heaven, earth, space, or time. 15
• A formula’s value is also determined by its success rate, refinement cost, and practical applicability. A cheap low-grade Gu that can be widely equipped across a lineage may be worth more to that lineage than an impractical Supreme-grade formula. 86
• Extremely long formulas can contain repeated ingredients in large quantities; their apparent material count does not necessarily represent an equal number of distinct materials. 465
• Exclusive lineage recipes are protected through soul restrictions that prevent descendants from passing them on. Such formulas are commonly transmitted through memory rather than carried as written documents. 123 235
• The extinction of Spirit Insects and other materials can render ancient recipes unusable, making formula restoration and material substitution strategically valuable to major lineages. 147 155

Recipe Completion and Research

Documented Gu Recipes

Story Role

• Long Xuan’s discovery that incomplete recipes possess measurable progress transforms his apparently useless ability into a method for independently reconstructing and inventing Gu Recipes. 1
• His Cockroach Gu Recipe establishes his first reliable source of income and proves that cheap, low-grade materials can produce commercially valuable abilities. 5 6
• The immense cost of the Eye of Heavenly Secrets Recipe demonstrates that recipe completion does not solve the separate problem of acquiring rare ingredients. 15
• Long Xuan consistently keeps his most exceptional recipe-making capability secret, intending to reveal only ordinary unique Gu while concealing his capacity to develop high-value formulas. 5 15
• His later Wine Gu experiment shows how knowledge of brewing and distillation can be adapted into Gu refinement, producing results beyond conventional expectations. 45 49
• The Cockroach-style refinement method initially appears flawed because it lacks a main insect, but becomes a major advantage once Long Xuan gains access to the Microscopic World’s Supreme-grade Water Bears. 55
• The Long Family’s contribution system turns recipe creation into a route for Long Xuan to obtain large-scale resources. His Earthworker Recipe demonstrates that a practical, inexpensive Gu can be more valuable to a lineage than an unaffordable Supreme-grade formula. 86 87
• Long Xuan’s restoration of the Blood Dragon Battle Gu Recipe revives one of the Long Family’s lost powerful inheritances, strengthening both the Far West and Western Land branches while exposing the greed surrounding an ownerless completed Gu. 188 189
• The Soul Library transforms recipe research from a manually intensive process into one Long Xuan can pursue at accelerated subjective time, enabling him to contemplate formulas with millions or tens of millions of materials. 204 215 311
• His Coffee Gu enterprise converts a new Gu Insect school into a material-gathering network, allowing him to finance the seventy-million-material Board-Game Gu Recipe. 465 476