Xiao Han's super-vision pierced through the towering skyscrapers of New York, locking onto a chaotic street below.
Tony Stark was clad in his latest model of armor, engaged in a fierce battle with a heavy armored suit standing three meters tall.
Energy beams exploded across the street as pedestrians screamed and scattered in every direction.
"Looks like our billionaire is having quite the fun," Xiao Han said with a faint smirk, knees slightly bent.
Bang!
A black figure shot into the sky, Xiao Han streaking across the sky with lightning speed.
The crowd on the street all looked up, astonished.
"Is that… Superman?!"
Inside Tony's armor, J.A.R.V.I.S.'s voice sounded:"Sir, detecting a high-speed approaching target. Energy signature matches—it's Mr. Xiao."
"Finally, he's back," Tony muttered, firing a repulsor blast from his palm into the enemy armor's chest while casually glancing at the sky.
"Just in time for him to check out my new toy."
The black figure came to an abrupt stop before the two, defying the laws of physics.
Xiao Han hovered mid-air, golden patterns on his black suit gleaming brilliantly in the sunlight.
"Need a hand, Superman?" Xiao Han raised an eyebrow at Tony.
The enemy armor seized the opportunity, swinging a heavy punch toward the back of Xiao Han's head.
The fist stopped abruptly just centimeters from his hair, as if hitting an invisible wall.
Tony shrugged. "Thanks, but I was just testing the new armor's performance parameters."
He pointed at the enemy suit. "A mischievous villain."
Xiao Han shook his head. "No need to test. It'll be obsolete soon anyway."
"What do you mean?" Tony's face appeared confused as his helmet lifted.
Xiao Han said nothing and turned to face the enemy armor.
The massive machine seemed to sense the threat; all of its weapon ports lit up with charging energy simultaneously.
"Goodbye." Xiao Han lightly waved his right hand, and a golden rune flashed in the air.
A ghostly blue spatial vortex appeared beneath the armor's feet, swallowing the entire machine in an instant.
The next moment, a piercing screech echoed from high above. The armor was now in free fall from three thousand meters.
"J.A.R.V.I.S.! Track the target!" Tony shouted.
Xiao Han had already shot into the sky, quickly catching up to the falling armor.
With a whip-like kick, the armor shattered into pieces with a tremendous crash.
As the fragments began to scatter, Xiao Han traced a circle in the air with one hand. Another portal appeared, swallowing all the debris.
Three seconds later, he gently descended, carrying a dazed criminal and lightly dropping him in front of stunned police officers.
"Y-you… who are you?" one officer stammered, hand on his gun but too afraid to draw it.
Xiao Han smiled faintly. "You can call me Superman."
Tony landed nearby, lifting his helmet again. "Wait… what was that just now? Magic? J.A.R.V.I.S. shows that armor… it's gone!"
"Teleported to your private vault," Xiao Han said, patting Tony on the shoulder.
"Asgardian magic."
Tony's eyes lit up instantly. "Magic?"
"We'll talk later," Xiao Han glanced at the growing crowd and the smartphones being raised to record everything.
"Unless you want to be on every headline tomorrow."
The two shot into the sky, leaving the street below buzzing with amazement.
A few kids jumped up excitedly, shouting: "It's Iron Man and Superman! They're on the same team!"
At the top-floor lab of Stark Tower, Tony eagerly examined the armor remnants that had appeared out of nowhere.
"This is unbelievable!" he exclaimed, holding a twisted metal plate.
"Instant teleportation, zero energy loss, no spatial wrinkles… this completely violates known physics!"
Xiao Han stood by the floor-to-ceiling window, gazing over the New York sunset. "The Asgardians call it Heimdall's Blessing. Essentially, it uses Yggdrasil's energy to fold space. I saved Thor and made a trip to Asgard."
Tony spun around sharply. "Asgard? You mean the mythological…"
"Exactly as you think," Xiao Han nodded.
Tony's eyes widened, and the metal plate slipped from his hands with a clatter. "Wait, I'm not processing this… Did you just say… god? Asgard?"
He gestured wildly. "You mean that guy from Norse mythology flying around with a hammer?"
"Odin, Loki, Thor… all of them," Xiao Han explained with a smile.
"This… is real? I'm on Earth, right? How did mythology become reality?" Tony asked, still in disbelief.
Xiao Han pulled out a massive box from his system space. "More real than you can imagine."
Opening it, inside lay a metallic block glowing with a faint blue light. "This is Uru metal, gifted by Thor, a material used to forge divine artifacts in their celestial palaces."
"Alright, I'm not even surprised anymore," Tony said, exhaling deeply as Xiao Han produced objects out of thin air.
He carefully poked the metal with a finger, triggering an alarm from J.A.R.V.I.S.: "Unknown element detected. Atomic structure unusually stable, sir. This completely defies the periodic table!"
"So… the myths are real?" Tony grabbed a nearby whiskey and gulped it down, asking again.
"Odin? Loki?"
"Something like that," Xiao Han said, pointing to the metal.
"But they prefer to call themselves a higher civilization, not gods. Thor is just a hammer-swinging alien prince, though their civilization developed much earlier."
Tony suddenly grew excited. "Then their technology? Weapons? Energy? Transportation?"
"That's the surprise I've got for you," Xiao Han's eyes twinkled.
He pressed a hidden rune on the metal box, which disintegrated into countless nanoscale particles and reassembled in the air into a miniature war hammer.
"Asgardian nanotechnology," Xiao Han said, watching Tony's shocked expression.
"More advanced than your Mark series."
Tony, like a kid with a new toy, leaned in to inspect. "Impossible! Nanoscale self-reassembly requires unimaginable computing power and energy control…"
"Add a bit of Uru metal's magical properties," Xiao Han snapped his fingers, and the hammer turned back into the box.
"I spent some time figuring out the principle. The good news is, I've reverse-engineered it and simplified it for Earth materials."
Tony grabbed Xiao Han by the shoulders. "You have to teach me! Name your price!"
"That's surprise number two," Xiao Han said, pulling out a data chip from system space.
"All tech parameters are here, including the fusion scheme for Uru metal and Earth alloys. Enough to upgrade your Mark armors to nano-armors, and to make one for me too."
Tony snatched the chip like it was treasure, hands trembling. "J.A.R.V.I.S.! Scan immediately! Launch holographic modeling!"
Blue light scanned the chip, projecting a complex molecular structure in the lab's center.
Tony frantically manipulated the hologram. "This energy conduction… and this reassembly algorithm… Xiao! They're geniuses!"
Xiao Han leaned against the console, watching Tony dive into technological obsession. "Reminder: Uru metal requires a specific energy frequency to activate. I suggest modifying your reactor output first, and upgrade your core before anything else."