Chapter Summaries

Xu Yi applied for a research-assistant job at Camilla's Magic Tower, hoping to develop his magical abilities by combining magic with his mechanical engineering knowledge. After the interviewers rejected his credentials and dismissed his model piano, Stille intervened and ordered them to hire him, leaving Xu Yi ready to start work.

• Xu Yi visited Camilla's Magic Tower to apply for a job assisting Grand Mage Camilla with magical research.
• The interviewers doubted Xu Yi because he had graduated from Senkohaier Academy and lacked Mages' Guild Qualification Certification.
• Xu Yi demonstrated a model piano powered by a Magic Array, but the interviewers dismissed it as a toy.
• Stille arrived, examined the Piano Model, and told the interviewers to hire Xu Yi.
• The interviewers offered Xu Yi the job, and he said he could start anytime.

Xu Yi endured the midsummer heat in Camilla's Magic Tower and, after hearing his colleagues discuss the cost of a cooling array, decided to invent a magic-powered fan. He completed a Wind Magic Array design and stayed late to work through how to build it into a functioning device.

• Xu Yi reflected on his first month at the lab, where colleagues dismissed him as someone who got his job through Miss Stille's connections, though his magical ability had improved by observing their research.
• Rem complained about the heat and asked why Camilla would not install a Large Frost Array, while Vena explained that its setup and daily operating costs were prohibitive.
• Xu Yi lamented the lack of air conditioning and realized he could make a fan powered by magic instead of electricity.
• Xu Yi sketched an electric fan and designed a basic Wind Magic Array to drive it, then considered the challenges of combining the array with the fan's structure.
• Xu Yi stayed in the lab after his colleagues left, absorbed in solving the fan's engineering problems.

Xu Yi completed a Magic Fan powered by a Magic Array and demonstrated it to his colleagues in the research lab. Vena wanted to buy it, but after Xu Yi named a price of two Gold Coins, a woman at the doorway agreed to pay.

• Xu Yi finished building the Magic Fan and tested its blades and cooling breeze.
• Xu Yi brought the Magic Fan to the research lab, where Rem and the others tried it and questioned him about how it worked.
• Vena examined the Magic Crystal and asked Xu Yi to sell her the fan.
• Xu Yi asked Vena for two Gold Coins, and Rem and the others objected that it was too expensive.
• A woman at the research lab's doorway offered to buy the Magic Fan for two Gold Coins.

Stille brought Camilla a magic fan, whose steady operation baffled the Great Mage when he examined its array. Meanwhile, Heinz sold Xu Yi’s fans rapidly as customers flocked to his shop, leaving him hopeful about earning a fortune.

• Stille showed Camilla a magic fan, and he dismissed it as a simple wind array before later destroying it while testing its limits.
• Camilla examined the fan’s array and could not understand how it produced steady wind, so he wondered who had designed it.
• Heinz displayed a magic fan in his shop, and customer Karl bought two for four gold coins after learning how little magic crystal they used.
• Heinz realized his ten-percent commission would earn him forty silver coins from Karl’s purchase.
• More customers entered Heinz’s shop asking to buy two fans each, and Heinz wondered if the sales would make him rich.

Xu Yi organized help from ten colleagues to mass-produce Magic Fans after Heinz received 137 preorders. They completed 487 usable fans, and Xu Yi headed to Heinz’s shop on the eve of the planned sale, unsure whether the investment would pay off.

• Heinz told Xu Yi that he had received 137 Magic Fan preorders and urged him to produce as many fans as possible.
• Xu Yi ordered two hundred fan housings and recruited ten colleagues to draw modified Wind Spiral Arrays for extra pay.
• Xu Yi taught the colleagues to draw his array correctly after a rough copy produced only a weak breeze in a fan.
• Xu Yi and his colleagues completed five hundred Magic Fans in a week, with thirteen defective and 487 ready for sale.
• Xu Yi paid each colleague five gold coins and gave each one a Magic Fan, then went to Heinz’s shop ahead of the large sale.

Xu Yi and Heinz sold all 487 Magic Fans in less than an hour during a shopping frenzy at Heinz's General Store, then took advance orders for more. As Xu Yi planned to expand production, a buyer named Reeves arrived and ordered one thousand Magic Fans.

• Hundreds of customers crowded into Heinz's General Store to buy Magic Fans, and Xu Yi and Heinz sold all 487 they had in stock.
• Heinz announced that customers could place advance orders for another shipment, and the remaining customers did so.
• Xu Yi gave Heinz four hundred gold coins, asking him to use the extra hundred to rent a larger space for Magic Fan production.
• Alex alerted Xu Yi and Heinz to a big customer, and Reeves arrived and ordered one thousand Magic Fans.

Xu Yi refused Reeves's order for a thousand Magic Fans because he could not guarantee their production or quality, then considered the unreliable suppliers limiting his business. Vena gave Xu Yi her detailed notes on the fan's Wind Spiral Array, and Stille summoned him to meet her grandfather.

• Reeves offered to buy a thousand Magic Fans and raised his price, but Xu Yi declined because he could not guarantee the fans' quality or produce them reliably.
• Reeves gave Xu Yi his card and invited him to contact him in Anvilmar, while Heinz recognized the address as Sloan Street, home to great nobles.
• Xu Yi worried that his colleagues would not sign employment contracts and that the Blacksmith Shop could not consistently make casings to his specifications.
• Vena showed Xu Yi her detailed drawing of the Wind Spiral Array and let him keep it, giving him a way to teach others how to draw the array.
• Stille entered the research room and told Xu Yi that her grandfather wanted to see him.

Xu Yi was summoned to Great Magician Camilla's laboratory, where Camilla questioned him about the Magic Array in his Magic Fan. Xu Yi explained how its design balanced airflow, durability, and energy use, and Camilla continued asking about its details.

• Stille led Xu Yi to Camilla's top-floor laboratory and explained that Camilla spent much of his income on magical research.
• Xu Yi noticed that the Magic Fan he had made lay dismantled in a heap of scrap metal.
• Camilla admitted that he had taken apart the fan and asked Xu Yi to explain parts of its Magic Array.
• Xu Yi explained that he had limited the array's power because the fan's materials could not withstand faster blade rotation.
• Xu Yi described how other parts of the array stabilized airflow and connected its output to the fan's central shaft.
• Camilla continued pointing to features of the Magic Array and asking Xu Yi for explanations.

After Great Mage Camilla offered Xu Yi an apprenticeship, Xu Yi realized he wanted to unite magic and mechanical engineering and build an industrial system. He stayed at the magic tower and went to Baron Rector Magic Academy to recruit students for paid work that he said could improve their magic.

• Great Mage Camilla praised Xu Yi's Magic Fan design and invited him to assist with his magical research, but Xu Yi asked for time to consider the offer.
• Xu Yi recognized that his passion for mechanical engineering had returned and resolved to develop magical machinery and establish an industrial system in the Sains Continent.
• Xu Yi decided to remain at the magic tower to preserve his relationship with Great Mage Camilla, despite declining to become his apprentice.
• At Baron Rector Magic Academy, a teacher showed second-year Class Four the Magic Fan's array, and the students marveled at its sophistication while Olin Zetaman dismissed the device.
• Xu Yi visited Director Hiller and asked to hire students, claiming the work would pay them and help improve their magic.

Xu Yi chose a remote tract of Viscount Leslie’s wasteland for a Magic Fan factory and planned to expand production with newly recruited academy students. After inspecting the site, he decided its road had to be improved, while the land’s flat ground and nearby river and woods made it promising for development.

• Xu Yi selected a large, undeveloped plot belonging to Viscount Leslie and explained to Heinz that he wanted room to grow beyond a single Magic Fan workshop.
• Xu Yi recruited thirty Baron Rector Magic Academy students to draw Magic Arrays for Magic Fans under contracts that reduced production costs.
• Xu Yi insisted that the rough road to the chosen plot be rebuilt so future precision goods would not be damaged during transport.
• Xu Yi and Heinz met Viscount Leslie’s steward, Butler Wenlai, who warned them to inform the viscount before making changes to the land.
• Xu Yi inspected the tract and found level ground, a nearby river, and accessible timber, with poor road access as its main drawback.

Xu Yi secured a one-year lease for land from Viscount Leslie, then saved a badly beaten slave girl by arranging for her to become his. He offered the Viscount a ten-percent stake in his Magic Fan factory, explaining to Heinz that sharing profits would secure the noble’s long-term support.

• Xu Yi presented his first-year land-use plan to Butler Wenlai and signed a one-year lease for the hectare of land.
• Xu Yi found three guards whipping a child slave for losing an ox, and Butler Wenlai told him not to interfere in the household’s private matter.
• Xu Yi offered the Viscount a ten-percent stake in his planned Magic Fan factory in exchange for the slave girl, and Butler Wenlai gave her to him.
• Xu Yi and Heinz carried the injured girl into their carriage after Butler Wenlai and the guards left.
• Heinz protested the cost of the deal, and Xu Yi explained that aligning Viscount Leslie’s interests with his business would help secure the land and the Viscount’s support.

Xu Yi refined the magic fan’s array with Vena’s help and began designing a variable-speed model. Stille treated him to dinner, then asked him to go to his house to see the piano model.

• Xu Yi returned to Camilla’s Magic Tower after taking an injured slave to a clinic, and Vena showed him her improved magic array design.
• Xu Yi paid Vena ten gold coins for her research, prompting Rem to question their arrangement and Vena to angrily rebuke him.
• Xu Yi used Vena’s design to begin developing a second-edition variable-speed magic fan before the summer heat ended.
• Stille came to the research room after hours, took Xu Yi to dinner, and asked whether he still had the piano model from his Magic Tower interview.
• When Xu Yi said the piano model was at home, Stille asked him to take her there.

Xu Yi agreed to teach Stille to make a Piano Model as a birthday gift, then brought his injured young slave home from the clinic. He returned to researching the Magic Fan and concluded that poor materials and imprecise manufacturing would hinder mass production.

• Stille asked Xu Yi to teach her to make a Piano Model for someone's birthday, and he arranged to teach her in the research lab after work.
• Xu Yi found the young slave awake at the clinic and, seeing his fear of being left alone, took him home while continuing to pay for his hospital bed.
• Xu Yi settled the young slave in at home, gave him medicine, and returned to researching the Magic Array and Variable-Speed Magic Fan.
• Xu Yi realized that inferior iron Bearings would limit the Magic Fan's lifespan and that inconsistent hand-forged parts would obstruct large-scale production.
• Xu Yi listed the Machine Tools needed for mass production and wailed at the scale of the manufacturing problems ahead.

Xu Yi persuaded the Dwarf master smith Ranu to make screws and build a Magic Thread-Rolling Machine to produce them. Ranu agreed to attempt the machine and asked Xu Yi to explain its complicated design.

• Xu Yi visited Ranu at the Volcano Smithy and asked him to make a screw, but Ranu initially dismissed it as a trivial nail.
• Xu Yi showed Ranu an excavator design, convincing him that the drawings reflected serious engineering even if the machine could not yet be built.
• Xu Yi showed Ranu how screws, nuts, and threaded openings fastened parts together, and Ranu recognized the design’s usefulness.
• Xu Yi told Ranu he needed one hundred thousand screws, prompting Ranu to protest that the order would take his whole life.
• Xu Yi presented a Magic Thread-Rolling Machine designed to produce screws, and Ranu agreed to work on building it after Xu Yi explained how it worked.

Xu Yi helped Stille finish her Piano Model and explained why he valued using magic to improve everyday life rather than pursuing status as a mage. After demonstrating that he had become a Third-Level Mage, he left the Magic Tower and learned from Heinz that someone was copying the Magic Fan.

• Xu Yi guided Stille through the final adjustments to her Piano Model, which she finished before her friend's birthday.
• Stille asked Xu Yi why he had declined her grandfather's offer to become his apprentice, and Xu Yi said he had other ambitions and viewed magic as a tool for building useful things.
• Xu Yi cast the third-tier Micro Tornado Spell, surprising Stille with his rapid rise to Third-Level Mage.
• Xu Yi left the tower after postponing dinner with Stille and met a distressed Heinz outside.
• Heinz told Xu Yi that someone was making copies of the Magic Fan.

Xu Yi explained to Heinz how the Noble Council emblem and a recognizable brand could distinguish their Magic Fans from imitations. When a crowd gathered at Heinz's General Store over broken counterfeit fans, Heinz denied responsibility because they lacked the store's brand mark.

• Xu Yi showed Heinz the brand emblem he had registered with the Kingdom Noble Council and explained how it would distinguish their Magic Fans from copies.
• Xu Yi asked Heinz whether Bunta City had a newspaper, planning to demonstrate the value of a brand.
• Afalia's Father carried his broken Magic Fan to Heinz's General Store and found more than a hundred people gathered with failed fans.
• Heinz tried to calm the crowd and examined a man's fan, then said the store had not sold it because it lacked their brand mark.

Heinz exposed the broken Magic Fans as counterfeits and offered their owners one free repair, promoting the Xinfei brand. Xu Yi repaired Afalia's Father's fan and explained that Xinfei fans were more reliable, leaving him resolved to buy from the guild in the future.

• Heinz showed the crowd the Xinfei emblem and explained that fans without it had not been sold by his shop.
• The buyers realized counterfeit sellers had tricked them, and Heinz announced one free repair for any damaged Magic Fan that needed no replacement parts.
• The crowd praised the Xinfei Merchant Guild and said they would look for its brand when buying fans.
• Xu Yi told Heinz that free repairs helped build brand awareness, and Heinz began to understand the value of the effort.
• Xu Yi repaired Afalia's Father's counterfeit fan and warned that it could run for less than two hours before needing a break.
• Xu Yi contrasted it with Xinfei fans, which could run for three days straight, and Afalia's Father vowed to remember the brand.

Xu Yi tested two machines built by Ranu and confirmed they could turn iron rods into standardized screws. Their success gave Xu Yi a way to begin producing screws in batches and marked a major step toward industrial production on the Sains Continent.

• Xu Yi asked Heinz to recruit more students and discussed hiring blacksmiths to improve the quality of Xinfei Magic Fan housings.
• Xu Yi visited the Volcano Smithy and found that Ranu had finished the Magic Heading Machine and Magic Thread-Rolling Machine.
• Xu Yi powered the heading machine and used it to form a round head with a cross-shaped recess on an iron rod.
• Xu Yi ran the rod through the thread-rolling machine, which cut threads into it and produced a finished screw.
• Ranu watched the machines work and wondered how Xu Yi had invented them.

Viscount Leslie recognized the business potential in Xu Yi’s Magic Fans and branding plans, then invited him to dinner at his estate. Meanwhile, Xu Yi woke to find Stille cooking at his house and learned that the young slave he had mistaken for a boy was a girl.

• Viscount Leslie praised Xu Yi’s Magic Fan business and predicted he could expand sales beyond Bunta City.
• Viscount Leslie told Butler Wenlai to invite Xu Yi to visit his estate as a guest.
• After testing the Magic Heading Machine and Magic Thread-Rolling Machine, Xu Yi gave Master Ranu a list of adjustments, which the master agreed to finish within three days.
• Xu Yi returned home exhausted and fell asleep, then woke to find Stille and the young slave cooking dinner.
• Xu Yi scolded the young slave for helping while injured, and Stille told him the girl’s wounds were mostly healed.
• Stille revealed that the young slave was a girl, surprising Xu Yi, who had assumed she was a boy.

Xu Yi learned that the little slave he had bought was a girl named Vivian, while Stille told him that Great Mage Camilla had recommended him for the Mages' Guild's annual certification examination. After dinner, Xu Yi returned to his workshop, where Vivian quietly cared for him as he worked.

• Stille teased Xu Yi for mistaking the little slave for a boy and explained that she had come to invite him to dinner and thank him for helping finish the Piano Model.
• Stille told Xu Yi that Great Mage Camilla had given him one of her recommendation slots for the Mages' Guild's upcoming Qualification Certification Examination, and Xu Yi accepted the recommendation.
• Xu Yi learned that the little slave could speak and that her name was Vivian, then reassured her that he would not mistreat her.
• Xu Yi returned to his workshop to work on the second version of the variable-speed Magic Fan, while Vivian brought him tea and watched him work.