Magic Fan

Biodata

Feature	Value
Name	Magic Fan (魔力风扇)
Alias(es)	Xinfei Magic Fan—the Xinfei-branded product 17 24
Creator	Xu Yi 2 3
Affiliation	Xinfei Merchant Guild 23 24
Occupation/Role	Magic-powered household appliance for relief from summer heat 3 5
Power Source	Magic Crystal supplying a modified Wind Spiral Array 3 5
Status	In mass production; demand declines as summer ends 32 36 47
First Appearance	Conceived in Chapter 2; completed and demonstrated in Chapter 3 2 3

Background / History

Xu Yi conceived the Magic Fan during a sweltering day at Camilla’s Magic Tower. His colleagues could not afford a Large Frost Array, prompting him to adapt the electric fans of Earth by replacing their electric drive with magic. He completed the first working desk fan after half a month; shaping its casing proved more time-consuming than developing its power source 2 3.

Stille bought the first fan and brought it to Camilla. Initially dismissive, Camilla investigated its unusually steady airflow and destroyed it by injecting excessive magical power. His subsequent questions led Xu Yi to explain the engineering behind its limited output, stability, and efficient connection to the shaft 3 4 8.

Working on the fan rekindled Xu Yi’s passion for mechanical engineering. Rather than immediately accept Camilla’s offer of apprenticeship, he resolved to combine magic and machinery into a complete industrial system 9.

Models and Development

Model / Development Stage	Chapter	Features and Changes
Initial concept	2	An Earth-style fan powered by a basic wind-element array reproducing the effect of Wind Vortex.
First-generation Magic Fan	3 12	Working three-bladed desk fan powered by a small Magic Crystal; runs at one constant speed.
Variable-speed array design	12	Vena’s experiments establish a Lidil Node configuration that resolves an array conflict, enabling development of adjustable speeds. Xu Yi begins redesigning the mechanical structure around it.
Second-Generation Variable-Speed Magic Fan	32 34 36	Enters assembly-line production and receives a dedicated advertisement. Its design supports greater production capacity than the first generation.

Appearance

The original prototype was a crude, predominantly iron desk fan. Its awkward appearance resulted from the continent’s lack of mature plastic production, suitable alloys, and precision metalworking 3.

• Base: Square, with wooden components; the magic array is housed inside it 3 4.
• Blades: Three evenly spaced, leaf-shaped blades 3.
• Protective cage: Widely spaced steel bars surrounding the blades 3.
• Controls: A switch on the base and a Magic Crystal compartment at the rear 3 4.
• Activation effect: A faint, pale cyan glow appears through the gaps when the array starts 3.
• Brand marking: Xinfei fans bear a half-wing emblem above the switch 17.

Abilities & Skills

Magic-Powered Airflow

A modified low-level Wind Spiral Array replaces the function of an electric motor, driving the central shaft and fan blades 2 5 8.

• Produces a steady breeze rather than the violent, fluctuating wind normally associated with wind-whirl magic 4.
• Restricts the array’s output to a narrow range to keep airflow consistent 8.
• Connects the array to the shaft in a way that reduces wasted Magic Crystal energy 8.
• Provides localized relief from heat, but cannot match a Large Frost Array’s cooling effect or cover a large room effectively with one unit 5 8.

Variable-Speed Operation

The first generation runs at a fixed speed. The second generation uses an improved Wind Spiral Array and a revised mechanical design to allow speed changes 12 20 32.

• Vena’s array research saves Xu Yi time, allowing him to concentrate on integrating magic with the machinery 12.
• Adding variable speed requires extensive changes to the array, overall structure, and engineering calculations—not merely a new control 20.

Energy Efficiency

The fan can operate on a small, very low-quality Magic Crystal 3 32.

• One such crystal keeps a fan running for three full days 4 32.
• The crystal visibly fades as its stored magic is consumed 3.
• Xu Yi believes better manufacturing would reduce consumption further; the existing fan remains inefficient by Earth’s manufacturing standards 32.

Mechanical Limits

The fan’s operating power is deliberately limited because its materials cannot safely withstand much higher blade speeds 8.

• Camilla’s excessive magical input causes the blades to detach, smash against the cage, and deform it 4.
• Ordinary iron bearings are adequate for the fan’s relatively low load, but their poor quality restricts durability 13 42.
• Inaccurately copied arrays may produce almost no useful breeze 5.
• Storing finished fans for a year risks leaving many defective by the following summer because of material limitations 47.

First-Generation Durability Estimate	Xu Yi’s Assessment
Total operating life	Unlikely to exceed 3,000 hours 13
Seasonal household use	At most four years at eight hours daily during the three hottest months 13
Near-continuous use	Heinz’s household fans might wear out by the following summer 13

Manufacturing

Early production depended on hand-forged casings and Xu Yi’s personal assembly work. Inconsistent components and an unstable workforce prevented him from accepting orders solely on the basis of demand 7 13.

Production Stage	Workforce and Method	Output / Constraint
Initial hand assembly	Xu Yi builds each fan himself	At least three uninterrupted hours per unit 5
First large batch	Smiths make housings; ten tower colleagues draw arrays under Xu Yi’s instruction	500 completed in a week; 13 defective and 487 usable 5
Academy-student workforce	Thirty Baron Rector Magic Academy students sign contracts to draw arrays for two silver coins each	More dependable than the tower colleagues, who refuse formal employment contracts 7 10
Pre-assembly-line factory	Students draw arrays, but Xu Yi still handles certain assembly and testing tasks	About 150 fans daily; output remains limited by Xu Yi’s time 23
Second-generation assembly line	One hundred enslaved workers lent by Leslie operate machinery and perform specialized assembly tasks; students still make array bases	300 fans per eight-hour day; Xu Yi estimates 500 would be possible with overtime 32 36

Assembly-Line Machinery

• Heading and thread-rolling machines: Help produce components needed for the second-generation fan 20 32.
• Stamping press: Forms thin iron plate into fan casings, replacing reliance on individually forged housings 32.
• Five machinery types: Divide component production among specialized machines 32.
• Task specialization: Assembly is broken into dozens of simple steps, including fitting components, making wire grilles, and fastening screws 32.

This system allows production to bypass Bunta City’s blacksmith shops, whose inconsistent casings and limited output had become major bottlenecks 29 32.

Sales and Market Expansion

Price and Running Costs

Measure	Documented Figure
Standard purchase price	Two gold coins 3 5
Early private resale price	Three gold coins during shortages 5
Early monthly operating-cost ceiling	No more than one gold coin in Magic Crystals 5
Later monthly operating-cost estimate	Less than ten silver coins 33
Large Frost Array comparison	Thirty gold coins to install and over one hundred gold coins monthly to maintain 5

Commercial Milestones

Event	Result
Heinz’s initial retail trial	Customer Karl buys two fans for four gold coins 4
First preorder rush	137 preorders in one day 5
First large-scale sale	All 487 usable fans sell in under an hour; more than one hundred customers remain without one 6
Reeves’s bulk offer	Xu Yi refuses an order for 1,000 fans, even at two gold coins and ten silver coins each, because he cannot guarantee quantity and quality 7
Sales within the first month	2,371 Xinfei fans sold; net profit exceeds 2,200 gold coins 24
Orders from nearby cities	Factory capacity limits accepted orders to 5,000 units despite stronger demand 29
Sartan City partnership	Fasak receives machinery, worker training, and the second-generation assembly process; Xinfei earns ten silver coins per fan he produces 35 36

• Merchants from Karma City and other nearby cities seek additional stock after their trial batches sell out rapidly 23 29.
• Xu Yi delays broader expansion rather than accept orders the factory cannot reliably fulfill 23.
• As summer ends, falling demand leads him to rename the Magic Fan workshop the Household Magic Machinery Workshop and prepare it for additional products 47 48.

Branding and Advertising

• Imitation problem: Similar-looking fans appear soon after the original’s success. The Sains Continent has no patent protection with which Xu Yi can stop their manufacture 15 16.
• Customer confusion: Buyers bring broken imitations to Heinz’s store, believing it responsible for all Magic Fans 16 17.
• Xinfei identification: Heinz distinguishes genuine products by the half-wing emblem above their switches 17.
• Exclusive retail: Xinfei restricts Bunta City sales to one shop, helping customers reject counterfeits even when imitators attempt to copy the brand mark 33.
• Market result: Sales rise after the imitation crisis, and Xinfei establishes a complete monopoly in and around Bunta City 33.
• Second-generation advertisement: Master Anlisos paints Stille beside the new variable-speed fan in a countryside setting. A large advertisement featuring her and the fan later attracts Akali and Avita’s attention 34 40.

Other Uses and Reception

• Teaching aid: A Baron Rector Magic Academy teacher dismantles a fan for an array lesson, praising its ingenuity despite Olin Zetaman’s dismissal of it as a commoners’ appliance 9.
• Engineering example: Xu Yi uses the fan to introduce Akali and Avita to the principles of combining magical drive with mechanical structure 45.
• Noble reception: Viscount Leslie uses one despite other nobles considering it beneath their status; he recognizes its usefulness and wider commercial potential 19.
• Research recognition: Camilla’s study of the fan leads to praise for Xu Yi’s ingenuity and an offer to assist directly with magical research 8 9.