Mission in another world with my transformed best friend

"Damn it, the temperature just won't go up, and the blower is already at its maximum speed..."

Just as Wang Kai was lost in thought, he heard a few curses from a blacksmith not far away, so he put down the sword blank he was holding and went over...

A young man who appeared to have dwarven blood was muttering curses to himself in front of the furnace. Wang Kai walked over and looked at the furnace next to him. Inside the furnace, which was made of clay, several iron blocks were already glowing red-hot, but they were still a little short of melting.

"Brother, it's just that it didn't reach the melting point, why are you cursing like this?"

Faced with Wang Kai's unintentional吐槽 (tu cao, a Chinese internet slang term for sarcastic or critical remarks), the dwarf youth turned his head, looked at the stranger in front of him, then turned his head back and replied with a crooked mouth.

"My name is Glenn, nice to meet you..."

"Oh, my name is Kyle, nice to meet you..."

Unexpectedly, this young man is quite polite, much more pleasing to the eye than that shady old dwarf from Cattra City (Old John sneezed behind the scenes). Reciprocating with courtesy, Wang Kai, who was treated with respect on their first meeting, couldn't help but want to help Glenn.

Based on his previous knowledge of "electricity," it didn't seem to have much to do with smelting. The only connection was "electric welding," which uses electric heat to melt welding materials. But in this other world where candles are still used for lighting, it's unrealistic to expect such modern technology. Relying solely on a blower to reach the melting point of steel is indeed a bit of a stretch...

A blower? Wait, isn't this world supposed to have a setting where "things that can't be solved by physics can be solved by magic"? Wang Kai thought for a moment, then took out an iron rod and placed it under the stove. As a magical wave swept across his body, the charcoal flames under the stove seemed to boil, and the heat instantly increased several levels...

Before the blacksmith Glenn could react, the iron in the furnace had already begun to slowly melt into molten steel. He held his breath, not blinking, until the last piece of solid iron melted into molten iron. Then he signaled Wang Kai to stop, and used a tool to "clamp" the furnace, trying to pour the molten iron into a mold while it was still solidifying. Unfortunately, he was too slow, and after pouring out a little molten iron, the rest solidified in the furnace...

Seeing Glenn's disappointed look, Wang Kai was helpless. After all, without the continuous heating from the charcoal fire, even the strongest wind would be useless...

"Mr. Kyle... right? How did you do that just now?"

"Well, I used a little wind magic... I also wanted to ask you, 'smelting and casting' is usually used for manufacturing precision equipment, it's not necessary for forging weapons, right..."

"Yes, I was trying to see if I could make some iron parts that couldn't be cast by forging after the steel melted, but it seems that's not going to work."

"What part?"

"I can't really explain it. Back in my hometown, we used to tie dried rattan into knots and coils to form a 'cylindrical' shape. We would then wrap it around the legs of a stool to secure it. Even if you sat down hard, the stool would bounce back slightly to cushion the impact, which was great for elderly people with mobility issues. Unfortunately, rattan is prone to deformation and breakage, and most of the time it wouldn't last more than a few days... So I was wondering if it would be possible to make one using a new iron material that is less prone to deformation and has good flexibility..."

Based on Glenn's description, Wang Kai thought for a moment and immediately smiled and said.

"You didn't mean 'spring,' did you...?"

"A spring? That new word does indeed fit my description quite well. Brother Kyle, judging from your smug look, have you perhaps seen this thing before?"

"Ah... how should I put it, I know a little bit about it. After all, it's a vibration-reducing device. If this thing had existed earlier, I wouldn't have had to endure that period of unbearable 'carriage journey'... wait, carriage?"

It was as if a switch had been flipped in Wang Kai's mind. He recalled the various types of carriages he had seen, whether they were for cargo or people, or even the "luxury aristocratic carriage" that Zhang Lan had ridden in. After carefully recalling the inherent connection structure between the wheels and the carriage, he glanced at the size of the furnace in Glenn's hand used to melt steel, and a bold idea suddenly arose in his mind...

"Glenn, when you're about to fall down, be careful with your speed..."

"Are you really going to do this? Be careful..."

After melting another pot of molten steel, Glenn gently tilted the furnace, and a "steel of molten iron" about 1-2 centimeters in diameter slowly fell through the small hole drilled in the furnace, sliding down into the iron bucket filled with oil below.

Wang Kai held his breath and, just as the molten iron column was about to touch the oil surface, he used the iron rod in his hand to manipulate it, changing the vertical descent into an arc. Upon contact with the oil, the molten iron cooled and solidified immediately. As the molten iron continued to slide down, it slowly hardened into a spiral shape through quenching, maintaining the same arc. After pouring out the entire batch of molten steel, Wang Kai used the iron rod to scoop out the spiral steel bar, his smug smile growing increasingly pronounced…

"This is amazing, Brother Kyle. This finished product is exactly the same as the one I wove with rattan. It takes such a method to make it."

"You flatter me. This is my first time doing this too. This thing doesn't look very regular, but it should work, right?"

Wang Kai squeezed the "spiral bar" in the middle with both hands. The steel bar deformed slightly but also had a springy force. Realizing that he had "successfully" made three more "samples" in the same way, he immediately took them and ran downstairs...

Outside the gates of the "Alchemy Pavilion," Zhang Lan's luxurious private carriage was still waiting. Upon seeing it, Wang Kai, without a word, took the "spring replicas" and compared them. The "load-bearing pillars" connecting the carriage and wheels fit perfectly. He then summoned several soldiers, who installed the "spring samples." He eagerly jumped into the carriage, only to realize upon grabbing the reins that he didn't yet have a "carriage driver's license"...

"I'm just applying what I've learned. I remember in movies and TV shows, all you have to do is grab the reins and give it a shake, and the horse will run on its own..."

Wang Kai mimicked the action from the movie, gripping the reins and giving them a sharp up-and-down shake. A "snap" sound came from the front of the reins, startling both horses. The horses neighed and howled, and an unparalleled acceleration pinned Wang Kai firmly to the coachman's bench. Then, they galloped off at a speed that no ordinary person had ever seen before...

"Wow, this feeling of flying is so exhilarating! The stability during this high-speed journey is a world of difference compared to the previous 'no-shock' ride. Mom won't have to worry about me getting motion sickness in carriages anymore... Wait, maybe I'm a genius too, a genius, hahaha... By the way, how exactly do carriages stop? I don't think I've ever seen that in TV shows or movies..."

The Hani Merchant Guild, occupying the largest plot of land in the "rich area" of Merck Town, couldn't withstand two crazed horses pulling a luxury carriage at a speed exceeding 250% of its maximum, even with a wide enough area around the "Alchemy Pavilion." Some soldiers tried to approach and stop it but to no avail. They wanted to forcibly stop the carriage, but seeing it was the exclusive carriage of the "Hermitage Saintess," they dared not act for fear of causing an accident. They could only try their best to avoid it, watching helplessly as this unprecedented "courtyard race" occurred...