Rolling his eyes, Tony circled the two sets of armor.
His fingers gently traced his own gold and red nano-armor, his eyes sparkling with excitement.
"Honestly, the design of your armor is way cooler than mine," Tony pouted.
"Black plus gold, low-key yet arrogant, and you don't even need a faceplate. It's practically cheating."
Xiao Han's lips curved slightly: "You can also not wear a faceplate."
"And then the media takes pictures of me rolling my eyes?" Tony rolled his eyes.
"Forget it, I still prefer my high-tech style."
He walked up to his armor and patted the arc reactor on his chest. A miniature artificial Sun was now embedded there, golden energy slowly flowing within.
"Jarvis, initiate the test program."
"Initiated, sir."
Tony's armor instantly disintegrated into countless nano-particles, flowing like liquid metal, rapidly covering his entire body.
The next second, the gold and red armor closed perfectly, and the eyes on the faceplate lit up with blue light.
Xiao Han stood in front of his black armor, his Super Vision scanning the structure of every nano-unit.
The golden S-shaped emblem on the armor's chest shone brightly under the lights, and the overall lines were more concise and sharp than Tony's.
"Your armor really doesn't need a faceplate? I still don't get it." Tony walked over and curiously poked the neck design of Xiao Han's armor.
"No need." Xiao Han smiled slightly, "My eyes are the best sensors."
Tony pouted: "OK."
"How does it feel?" Seeing Tony examining his armor like a curious baby, Xiao Han asked.
"Fantastic!" Tony's voice came through the armor's speaker, with obvious excitement.
"The energy flow is much smoother than before, it's like... like liquid sunlight flowing in veins!"
Xiao Han nodded, and with a flick of his finger, the black armor instantly disintegrated into countless nano-particles, wrapping around his body like a living thing.
In less than a second, the armor was perfectly donned, and golden patterns flowed with a faint light on the black base.
"Jarvis, initiate the test program." Tony raised his arm, "Let's start with the basic functions."
The laboratory floor suddenly sank, revealing a huge testing ground.
Various targets, obstacles, and simulated enemies rose from beneath the floor.
"Same old rule, whoever gets the lower score treats." Tony looked at Xiao Han provocatively.
Xiao Han's lips curved slightly: "Are You sure You want to bet on this?"
"Hey, this time is different!" Six miniature thrusters unfolded from the back of Tony's armor, "Based on the technology You provided, I've upgraded all the Systems."
"Let's begin then."
Before his words fell, the two figures shot out simultaneously.
Tony fired first, his palm repulsors blasting three targets. The nano-armor changed direction flexibly at high speed, with almost no inertial lag.
He whistled proudly: "See? The magic properties of uru metal have increased the armor's reaction speed..."
His words stopped abruptly, because Xiao Han was already quietly hovering in front of him, and all the surrounding targets had been precisely sliced by Heat Vision.
"That's not fair!" Tony protested, "You used superpowers!"
"You said we were testing armor performance." Xiao Han spread his hands innocently, "This is my armor's performance."
Tony mumbled a few words, then suddenly accelerated towards the other end of the testing ground: "Then let's get serious!"
The armor's arms unfolded, and dozens of miniature missiles whistled out. At the same time, the palm repulsors fired continuously, forming a dense network of fire.
Xiao Han chuckled lightly, his figure instantly disappearing, weaving through the barrage at a speed difficult for the naked eye to catch.
"Sir, You can hardly win this kind of competition against Mr. Xiao." Jarvis reminded him.
"Shut up, Jarvis, I'm creating a miracle!" Tony gritted his teeth and continued attacking.
Suddenly, all the missiles simultaneously froze in mid-air, as if they had hit an invisible wall.
Xiao Han hovered in the center of the testing ground, his eyes blazing with golden light.
"It's my turn."
He gently raised his hand, and those missiles actually turned around, aiming squarely at Tony.
"Wait! That's not scientific!" Tony hastily activated his defense System, "How can You control my missiles?"
"Telekinesis." Xiao Han smiled, "How about it, want to learn?"
The missiles suddenly all self-destructed, but the flames of the explosion were contained by some kind of force field, forming a perfect Fireball that slowly drifted towards Tony.
"Do You surrender?" Xiao Han asked.
Tony's faceplate popped open, revealing a helpless expression: "Alright, alright, I'll treat tonight. But..."
He suddenly showed a mischievous smile, "Let's test again!"
Xiao Han retracted his armor and landed lightly on the ground: "What?"
"Try flying?" Tony suggested.
"Are You sure?" Xiao Han's expression was a little strange.
"Sure plus certain!" Tony grinned, the thrusters on the armor's feet instantly flared, and he shot towards the laboratory's skylight like a Rocket.
Xiao Han leaped lightly, his figure instantly breaking the sound barrier, leaving a circle of White air currents in the sky.
The two of them rushed out of the building one after another, drawing brilliant trajectories in the New York night sky.
"Jarvis, activate full speed mode!" Tony shouted excitedly.
"Warning, sir, speed exceeds safe threshold!"
"Who cares!"
Tony's armor thrusters were at full power, and his gold and red figure shot straight into the sky like a meteor.
Xiao Han followed easily beside him, even casually turning his head to look at him.
"Are You sure You can keep up with me? How's the armor's noise reduction mode?" Xiao Han teased.
"The wind speed at high altitude is quite high."
"Shut up!" Tony's voice came through the communicator, "I'm wearing the most advanced armor in the World!"
"Really?" Xiao Han chuckled lightly, suddenly accelerated, and his figure instantly disappeared from Tony's sight.
"Hey! Cheating!" Tony widened his eyes, his armor's radar scanned frantically, but couldn't capture any trace of Xiao Han.
The next second, Xiao Han's voice came from behind him: "You're too slow."
Tony turned his head sharply and found Xiao Han hovering behind him, arms crossed, looking completely relaxed.
"Damn it!" Tony gritted his teeth, "Jarvis, activate overclocking mode!"
"Sir, overclocking mode will greatly consume energy, it is recommended..."
"Activate!"
Instantly, Tony's armor thrusters erupted with dazzling blue light, his speed soared again, even leaving a series of sonic boom clouds in the air.
Xiao Han raised an eyebrow, a hint of appreciation flashing in his eyes: "Not bad, You've made progress."
After speaking, his figure disappeared again. This time, he directly broke through the atmosphere and rushed towards outer space.
Tony followed closely, alarms blaring wildly inside his armor: "Warning! Oxygen supply in the air is decreasing! External temperature is dropping sharply!"
"Shut up, Jarvis! I can do it!" Tony gritted his teeth and persisted, his armor constantly adjusting its posture to resist the pressure from the thin atmosphere.
Finally, his vision opened up, the dark Universe, the blue arc of the Earth.
And, hovering not far away, bathed in the Sunlight, was Xiao Han.
Xiao Han turned his head and smiled slightly at him: "Welcome back to space, Tony."
Tony was stunned for a second, then burst into laughter: "Haha! This feeling, it's insane!"
He looked down at the Earth, the lights of New York faintly visible beneath the clouds, the waves of the Atlantic Ocean reflecting the moonlight.
"I never thought that one day I could fly here wearing armor I built myself." Tony's voice carried a rare hint of emotion.
Xiao Han hovered beside him, his gaze cast towards the more distant starry sky: "This is just the beginning."
Tony turned his head to look at him: "You've long been used to this perspective, haven't You?"
Xiao Han smiled: "Used to it? No, every time I see it, I feel awe."
The two were silent for a while, enjoying the silence of the Universe.