Improving Magical ACs in a Fantasy World

My name was Wisteria Summers. Before being pulled into this fantasy world, I had been an air conditioning unit repairwoman with ten years of working experience. Ever since starting that job, I had fixed nearly 1,000 air conditioning units. From split AC units to central ones, from home-use units to commercial ones, I had done it all.I thought that my life as I knew it would be over. I did not expect fate to give me a whole new project in life: becoming the general contractor for HVAC systems in this fantasy world.There were seven mountains in Crylestia School, and Icicle Mountain was the one people least wanted to go to.The reason for that was very simple: It was simply too cold.The interior of the mountain caves had a temperature of about -22 degrees Fahrenheit. If one simply stood there and breathed, one’s eyebrows would frost over. It was supposedly the ideal place to train ice magic. However, to a new student doing chores, it was a workplace nightmare.On my first day

“What’s your name?”“Wisteria Summers.”“Wisteria Summers.” The woman took my hand. “You can change any of Medici Mountain’s arrays however you want. I’ll pay you whatever you want in magical stones.”I agreed, but I set my fee at ten magical stones for each small job, fifty for medium-sized jobs, and at least 100 for big jobs. Central systems would require different pricing. She agreed. The system popped up. [User has completed an A-tier array improvement project. Reward: Magical XP +300, Array Blueprints: Level 2 unlocked.]I looked at the display of the system and the many blueprints populating on it. Suddenly, I realized something. These blueprints held designs for this fantasy world’s most powerful arrays. Rewarding me with these was pretty much giving me cheat codes. However, I did not rely on cheat codes. All I needed to modify these arrays was my HVAC experience of ten years. The cheat codes only gave me this world’s modification specifications. The true skill

“Tell me.”“Firstly, I want a copy of all the array blueprints involved in this project. I need to study the underlying logic of the ice arrays. “Secondly, I want to stay in the central area of Icicle Mountain during the project. The living area will need to be maintained at a temperature above 59 degrees Fahrenheit. “Anything below 50 degrees Fahrenheit makes my hands shake. Thirdly…”I paused. “You will have to be here every day during the project work. You won’t be there to monitor me, but I need you to help with testing. “Your cold is a natural source, like a ‘compressor.’ Without a compressor, I can’t modify the temperature.”Bear glanced at me for three seconds before agreeing. “That can be done.”“Then let’s sign a contract.”“What’s a contract?”“It’s… A verbal agreement is fine, too. You’re the boss.”Bear looked at me again.“Wisteria,” he started, “you’re the strangest person I’ve ever met.”“Thank you. You’re also the first client I’ve met who most needs to

I was stunned for a moment before I let out a chuckle.“No. Fixing AC units taught me that the hardest thing in this world isn’t creating something new. It’s to get something old to keep working. “A hospital can’t stop doing surgeries, large buildings can’t have blackouts, and the seals of ice dungeons can’t be broken. Switching something out and improving it without turning it off is the hardest job.”I looked at Bear. “That’s what I’m the best at.”Something under the layer of ice in his eyes seemed to move.Work started. The first step was to set up the fulcrum of the main array for all the “external units.”This could not be something manmade but something already existing. From the deepest part of Icicle Mountain, I found an ancient marrow stone that was a source of cold energy. Its efficiency of releasing energy was steady and would not be overloaded. At the same time, it had a connection to the mountain, so its source of energy would never be depleted. It was li

The work for the new seal was completed. The last step was to extract Bear’s core from the fulcrum of the old seal. This was the most dangerous step. It was like taking out an old compressor without stopping the AC unit and switching in a new one. I had devised three levels of defenses against any mishaps. Firstly, the marrow stone was already working as the new fulcrum, supplying power to the seal. Secondly, the six zonal seals were working in concert to supply power to the seal. Lastly, I stood before the control panel, ready to fix any problems that could arise. “Are you ready?” I asked.Bear stood before the fulcrum of the old array with his eyes closed. His core was tied up in the array, like a heart in the ice. Every marking of the array were the blood vessels. “Ready,” he replied. “On the count of three. Three, two, one, extract!”Bear’s core was extracted from the array.In an instant, waves of magical energy roiled, and cold energy dispersed all around us. The