Tony started conceptualizing and designing with high spirits, while not forgetting to observe Leon on the side.
He secretly paid attention and discovered that what Leon was actually studying was still the most basic mechanical structure.
Thus, he couldn't help but reveal a premature, victory-assured smile.
Having the motivation of competition really made a difference.
Only half an hour had passed before Tony perfected the propulsion system that had given him the biggest headache these past two days; it could be said to be an explosion of inspiration.
As for Leon, he had already finished learning about exoskeleton knowledge and started studying circuit construction.
Tony gave it a slight glance and smiled smugly once more.
He thought Leon had retreated in the face of difficulties and couldn't learn exoskeleton knowledge, which was why he had changed directions.
"Did you find learning armor knowledge too difficult? Never mind, let's start learning from the simple stuff."
Tony made a statement as if he were popping champagne: "Don't torture yourself. If just anyone could simply learn knowledge in this world, then what use would geniuses have?"
He waved his hand and started modifying the mechanical shoes again: "Don't worry, once I make the most outstanding armor, I'll still consider letting you experience it."
At this moment, Tony had completely forgotten the fact that Leon could fly.
He was entirely immersed in the joy of defeating his foolish brother in three days.
While modifying the thrusters with Dum-E's assistance, he even hummed the tune "Jingle Bells."
Leon ignored Tony, who was popping champagne halfway through the game.
He sat alone to the side, rapidly studying the textbooks and comprehensive papers JARVIS had prepared for him.
If Tony were to walk behind Leon at this moment and look at the display screen in front of him.
He would definitely slap his own just-now smug self right away.
Because on that screen, line after line of text and chart after chart were actually skipping past at a speed so fast it was a blur.
Yet Leon's gaze always remained fixed on the first line of text and chart that appeared each time.
--The speed at which the display screen switched text couldn't even match Leon's reading and comprehension speed!
It only took thirty seconds for Leon to finish learning a university-level textbook.
It only took half an hour for him to become a comprehensive theoretical expert in a sub-field.
If there were a system that could rate the knowledge mastered by an individual.
Then at this moment, one could even see upgrade icons continuously popping up above Leon's head.
Level.1, Level.2, Level.3, Level.4...
That way, Tony could also foresee in advance that his brother had already turned into a cheater.
Too bad there were no ifs.
When three hours had passed.
When Leon felt he had a sufficient foundation of knowledge and finally stood up.
Tony was conducting his thirteenth propulsion device experiment.
By now, Tony could float in the air relatively steadily.
He was trying his best to control his balance, glanced at Leon, and said, "Look who it is, could it be that our little Leon finally knows the difficulty of studying and is coming to surrender and beg for mercy from his brother Tony?"
Leon wore an unfathomable smile and reached out to adjust the non-existent glasses on the bridge of his nose.
"No, I've already finished learning the necessary knowledge, and now I'm ready to join your research."
Tony froze for a moment, then spoke with some amusement: "That's perfect. Although you won't be able to help me much, you can still pitch in to move heavy equipment."
He slowly descended from the air, swaying slightly upon landing before standing steady.
"Come with me. The propulsion system is basically finished; now we can start manufacturing the rest of the armor."
Tony had already concluded that victory was in the bag, so he began to plunge wholeheartedly into the creation of the armor.
He arranged the subsequent work in an orderly manner.
"Leon, go get the titanium-alloy materials and gold down. Dum-E, hold the magnifying glass steady."
The two quickly began cooperating to build the armor.
During the process, it was basically Tony giving orders and directing.
Leon would occasionally ask a few questions.
Tony, having entered a state of focus, didn't feel anything was amiss.
He explained as he worked, and it could be said he held nothing back.
It seemed that although he thought his younger brother was very foolish, he still hoped the other party could learn more of his skills.
"There, that position is wrong. You have to go around and start from here, otherwise there will be a short circuit."
"Aha, you must be kidding. How could such a heavy load possibly be fitted with transformation equipment?"
"Very good, the flight stabilizer can be installed right here."
"Leon, your strength is truly a great tool for assembling and building equipment. I dare say even a hydraulic press isn't as useful as you."
"I should have had you come down to help me a few days ago."
A whole day, plus an entire night, the two spent building the armor.
Because of Leon's joining, the assembly and manufacturing of parts could be described as both precise and efficient.
For instance, if Tony temporarily needed a part with IT-grade precision, he previously would have had to wait for the factory to deliver it.
But on this night, Leon only needed to wave his fist to get a component better than IT-grade.
"Very good!" Tony's dark circles had turned into eye bags, but his large eyes were still bright and full of spirit.
The armor that originally would have required a month or even several months to build and fine-tune.
With Leon's help, it was actually eighty percent completed overnight.
Tony's mental state right now was incomparably invigorated.
With just one final push, he would be able to put on the new armor and soar through the skies.
He habitually instructed: "Leon, go build another current circuit. Next, we just need to plug into JARVIS's system and carry out assembly experiments to finish the final steps."
However, what he got in return was a different answer.
"No, Tony, I'm leaving," Leon refused.
"What are you talking about? Why are you leaving?" Tony widened his eyes.
Leon spread his hands: "Did you forget? I said I wanted to build an armor superior to the Mark within three days."
"And now, I've learned all your skills, so naturally I won't stay here."
"Besides, the final building steps for your armor aren't too troublesome; you can solve them by yourself."
"So I'm leaving. See you in three days, Tony." Leon waved his hand. "I'm going to your laboratory. Come find me upstairs if you need anything."
"What?" Tony's brain was crowded with question marks. "You're really going to build armor by yourself? What kind of joke is that? With your ordinary—wait."
Tony suddenly remembered.
During the night that had just passed.
As Leon assisted him, the questions he asked gradually went from superficial at the start to in-depth later on, and even began to give him considerable inspiration.
The hands-on part was the same: unfamiliar at first, but handy later.
In other words, Leon really had learned all that professional knowledge!
Tony was shocked by his suddenly awakened memories.
Immersed in work and highly focused last night, he hadn't noticed.
Now that he thought about it, Leon had clearly grown from a machinery novice into a mechanical expert overnight.
And an expert not necessarily weaker than him!
"Your learning speed! Th-this is Super-Brain?" Terrified, Tony collapsed into his chair.
What was this? Could a Super-Brain be so unreasonable? This was cheating!
Before you continue