Sokovia, medical center.

In the underground testing room, a silver light shone, and the violent wind pressure hit the wall, like an extremely strong wind, and the air flow whistled and circled in the wide space, making a "whining" sound.

"Bang", the air vibrated out a circle of ripples visible to the naked eye, the silver light from the overlapping afterimage, into an unpredictable illusory streamer, in the outdoor monitoring hall, the value displayed on the screen continued to rise, just now directly broke through the sound barrier, wave after wave of air waves churning, as if carrying the mighty and majestic thunder, hitting the hard and thick wall.

The silver light and shadow pierced the air, as if propelled by a huge force, wandering through the boundless void.

"All signs are normal...... Physical exertion is approaching a critical point...... The speed fluctuation tends to be flat......"

Sean calmly recorded the data, he stared at the timer and said in a deep voice, "Pietro, you need to slow down!" ”

"No—I, feel, get, very, good......"

The normal intonation sounds like a long vocal cord, and everything in the outside world seems a little distorted in the case of high-speed movement.

"The time limit is ten minutes...... Signs fluctuate gradually...... Drop in blood sugar levels...... Heart rate increases! ”

The silver light and shadow have been running non-stop for ten minutes, and the human body has been kept in a state of extreme speed for a long time, which is a great test for vital signs, consuming a lot of energy, especially the bones of the whole body will bear strong pressure.

Pietro enjoyed this feeling very much, as if the whole person was integrated into the air current, incarnated into the wind, and the extreme pleasure brought by the speed undoubtedly made people indulge in it, breaking through the physiological limits of human beings, constantly moving at high speed, a series of air waves pulled and exploded, and the roaring sound was like a wave crashing against the thick wall.

The silver light image is a stream of light that shuttles through the void, unpredictable and difficult to capture, and the direction of space and gravity seem to have no effect on Pietro, whether he runs vertically along the wall or walks upside down, it is a breeze to do as he pleases.

Especially when Pietro broke through the sound barrier, his body seemed to enter another wonderful world, wearing a special material tights, he could feel that his whole body was in a continuous high-speed vibration, breaking through the barrier of airflow, as if walking in a vacuum pipe.

"Pyro is going to be fine, is he?" Wanda asked worriedly.

The young girl seems to have been carefully dressed, with long brown hair on her shoulders, under the fiery red trench coat, a tight vest that outlines beautiful curves, and a pair of straight and tight long legs, her pure temperament makes her look like a schoolgirl on campus, but the bright red lips and the charming sparkle in her eyes add a charming atmosphere.

The two contradictory temperaments are mixed together to create a special charm, like a mysterious witch in the Middle Ages, exuding an allure that makes you want to explore.

"Don't worry, Wanda. Pietro is outstanding, he's just like you, he's got a lot of potential. Sean chuckled softly, soothing the other.

He narrowed his eyes and stared at this shy and introverted young girl, what really attracted him was not Wanda's beautiful appearance and outstanding temperament, but under that curvaceous body, a distinctive energy fluctuation, crimson halo flickering, like a faint faint light.

The mind extends to the past, this is a strange energy that has never been seen before, like a void of nothingness, nothing exists, like the chaotic darkness before the explosion of the universe, which makes people indistinguishable.

The phantom of the Mind Gem vibrate, and the chaotic primordial darkness seemed to be sensitive, suddenly setting off an overwhelming tide of energy, the boundless spiritual world, the crimson light was released dazzlingly, and the illusion and reality were staggered and mixed, as if it was enough to distort reality and modify the world.

"Perfect Chaos, Tampering with the Generation of Probabilities from the Infinite Changing Future......"

Sean couldn't help but secretly sigh that Wanda's power has unimaginable room for evolution, and his hard work in the past month has not been wasted.

Under the infection and transformation of the Mind Gem, this young girl gradually revealed her gifted side, the chaotic original darkness formed by the mixture of spirit and consciousness, vaguely showing the great potential to distort reality, and Pietro is the same, far beyond the strength of ordinary people's bodies, the bones of the whole body are as strong as steel, and finally stimulate the powerful ability to move at high speed in the body.

The siblings surprise Sean, the speedster and the witch, and two good cards fall into their hands.

After continuous training, Pietro's speed increased more and more, and he broke through the sound barrier in just one month, although there is no such thing as speed power in this world, but in the long run, the practice is strengthened, and the use of scientific and technological means to improve and progress, and it is not impossible to break the limit of material in the future.

"Sean?"

Wanda was unaware of all this, feeling the burning gaze cast by the other party, and her face flushed with a faint crimson.

"That's the end of Pietro's test." The young man came back to his senses and said with a smile.

Wanda's potential is limitless, but it is also extremely volatile and fraught with danger.

He hadn't forgotten that in another non-existent timeline, Scarlet Witch had a nervous breakdown and turned the entire world into a utopia, leading directly to the sharp decline of mutants and their near-extinction.

It didn't take long for Pietro, who was slowing down, to stop, and due to the excessive physical exertion, the silver-haired young man with a strong physique lost some strength and almost stumbled and fell to the ground.

Wanda hurriedly stepped forward to support her brother, and Pietro's chest rose and fell like a rapidly pulled bellows, making a heavy wheezing sound.

"Give him some glucose water and nutrients for energy." Sean spoke, turning his head to look at the silver-haired young man who had officially become Quicksilver, "How do you feel?" ”

"Great! I've never experienced it before, like entering another world, where everything around me changes, and the real scene distorts into a blur of light and shadow, and I shuttle back and forth between them...... There is simply an unbeatable thrill! ”

Pietro relieved himself and regained some strength, his face full of excitement, and he couldn't wait to tell Sean how he felt.

"Don't stop there, Pietro, you should go for the ultimate in speed, never stop!"

Sean said with a smile that he was looking forward to the future development of the siblings, and as he deepened his understanding of the Mind Gem, he enjoyed the pleasure of changing the fate of others.

Wanda helped her brother back to the lounge, moving at high speed for a long time required a lot of physical energy, and the bones of her whole body would be under tremendous pressure, which was frankly not pleasant.

As the speed increases, the wind pressure and waves are like steel plates, and every breakthrough becomes extremely difficult, and for now, Pietro has reached his limit, and it is almost impossible to go further.

"Tony's Message ......"

Suddenly receiving a call from Stark really surprised Sean, it stands to reason that he should be in the North Pole now, cutting off all contact with the outside world.

How could Iron Man message himself for no reason?

"Sean, it's me. Time is short, long story short, I'm a bit of a hassle, if you get a message, locate my location - I don't know where I am, there's a little glitch with the steel armor, I can't contact Pepper, luckily Jarvis has your number on the mailing list......"

"It looks like the holidays are over."

Sean shook his head, during this period of time, he finally mastered the power of the Mind Gem, the huge iceberg that was sealed was absorbed and melted, and the massive memory information was gradually recovered.

Since Tony is in a little trouble, he might as well go and join in the fun.