Even though the glass entrance door had crystallized to the point of being harder than a diamond, its explosion was to be expected.
The sound waves from the gun of the Research Rector was at a frequency higher than a Million Hertz and that caused micro-fractures to appear within the door's lattice structure and simultaneously reduce its thermal conductivity, making it difficult to dissipate energy. Secondly, the supercharged electric beam that was fired by Lei Shi released an electric field that weakened the lattice bonds between the molecules of the door and induced a Thermal shock, causing a rapid temperature increase in the door.
The combination of the two attacks created a synergistic effect which amplified the damage of both attacks exponentially, putting the door under great stress. The fact that the entrance door didn't directly shatter showed just how great its brittleness was.
However, it was near its breaking point. The cold saber that was thrown by Leng Shi was at a temperature of absolute-zero and its collision with the door, which was already under great stress and strain with its molecules being heated up from vibrating due to the sound waves and electric charges, caused an instant contraction of the door's molecules which resulted in a weathering-effect, that coupled with the great force possessed by the saber as it flew through the air after being thrown with the full-force of Leng Shi's HTB suit was the straw that broke the camel's back, and the result was the shattering of the harder-than-diamond glass entrance door accompanied by a catastrophic explosion which sent its pieces flying through the air as terrifyingly hard projectiles.
The shock waves were powerful and far-reaching. It was to be expected since the door had absorbed the sound and electricity attacks, leading to its molecules being highly active, and with the First Law of Thermodynamics stating that "energy can not be destroyed but can only be changed from one form to another", an explosion of shock waves was the natural way to release that pent-up energy.
The Research Rector raised her arms and blocked the shock waves from the explosion. However, she was still pushed and slid backwards. Before she could regroup and pursue Lei Shi once more, the twins sprang up and dashed towards the entrance door, very quickly, they went through the opening. But as they were exiting, Leng Shi extended his hand and his saber was drawn into it from the distant floor, he caught it and sheathed it.
As soon as they exited the building, Lei Shi and Leng Shi jumped into the air, fired their thrusters and flew away. Before they went far, their aircraft ship flew to them from a distance place. They boarded it sped into the horizon.
The guards of Acme Research Company also took action. They boarded their ships and gave a wild chase. They hadn't had any measures in place to trap the twins because they had never expected them to break out of the harder-than-diamond glass doors and windows which, until then, they had considered unbreakable.
Lei Shi and Leng Shi fled at their aircraft's top speed. However, their pursuers didn't let-up. They used many evasive maneuvers to dodge the attacks which were shot at them while they swooped and dashed through the city's building in an attempt to throw them off. But all these proved futile.
"Goddamnit. They're chasing us like we stole their family heirloom" cursed Leng Shi.
"Of course they will. We actually did!" replied Lei Shi.
"Damn, we've gotta lose 'em" said Leng Shi.
"I think I have an idea" said Lei Shi after thinking about it for a while.
They flew away from the city, to the Indian Ocean, when they were over it; they had to put more effort in dodging their pursuers' frequent attacks since they were now in the open. After flying for some time, their aircraft suddenly turned, charged and fired back at their pursuers while they also charged at them.
The sudden change caught their pursuers off guard, and it led to them destroying three out of the eight flying ships that were chasing them. However, their ship also receive heavy damage in return, but instead of trying to escape since things had reached such a critical state, they kept on charging, leading to them colliding with one of the ships of their pursuers, leaving four behind which flew to the side to avoid being hit.
BOOM
*Splash*
Both ships exploded and had their parts fall into the ocean beneath them.
A few moments later, one of the remaining four flying ships descended and dived into the ocean, flashing lights and scanning the remains of the ships for the twins and possibly their comrades.
*Ban*
*Skrrr*
From within the debris, a white orb shot out and struck the ship that was underwater, causing it to be frozen in an Ice crystal. What followed immediately after was a blood-red supercharged electric beam which struck the frozen flying ship, not giving it a chance to escape.
*Crackle*
*Boom*
After seeing that, the pilots of the other ships didn't dare to dive into the ocean. They didn't want to be the next ones to visit the yellow springs.
After seeing that the other ships were hesitating, Leng Shi and Lei Shi, whose bodies were still wracked with pain from being in an exploding ship, immediately swam away as fast as they could. They didn't dare overstretch their luck. They knew the only reason they were able to freeze that ship in its entirety was because the white orb not only froze it but also water around it. Such an attack wasn't one they would use under normal circumstances because it consumed a lot of energy, but now they didn't care, their lives were at stake.
Furthermore, they were only able to restrain the damages to their bodies to that level because Leng Shi froze them both in Ice crystals right before the collision.
The twins didn't tarry, they activated their HTB suit's camouflage, descended to a lower altitude that was just above the seabed and swam as fast they could. They needed to get as far away as possible, before their pursuers decided to probe again.
To avoid being noticed by any heat detectors, they didn't use their thrusters to boost their speed.
As they fled, a luxurious flying ship arrived at the airspace where their pursuers waited. From it, a figure in a Rank 6 HTB suit jumped out and dived into the ocean.
As soon as the Research Rector saw the debris of the three ships when she was underwater, she immediately activated her X-ray vision and after she noticed that the twins had fled, she closed her eyes and from her HTB suit, she released a special series of sound waves which were tuned at particular frequencies.
These sound waves traveled fast and far. As soon as they reached the fleeing twins, it bounced back to its source. The moment the sound waves returned to the Research Rector, her eyes snapped open. She found them.
Without delay, she fired her thrusters and chased after them. The ships in the air above her followed closely.
The twins, unaware of the fast approaching threat, fled as fast as they possibly could. But after some time, Lei Shi turned and looked in the direction that they came from and said "Hol' up, wait a minute, something ain't right".
He looked farther using the zoom feature of his HTB suit, and what he saw made him curse "Fuck! How did they find us?"
After finding out that their pursuers were still hot on their trail and were chasing them with great speed, they didn't delay and fired their thrusters, they went to a higher altitude, increasing their speed of fleeing and reducing the water's pressure on them, and sped away. However, they didn't go up into the air so as to avoid being shot by the flying ships.
They fled as fast as they could, but still, the pursuers were gaining on them. When they were within fifty-meters of their pursuers, the Research Rector pulled out a rod from the nine one-meter long rods which attached to her back. The rods seemed to be special for she didn't have them with her when they were at the Research Company.
The Research Rector squeezed the rod, and like a folding fan, it unpacked itself into a two-meter wide disc. After that, she connected her gun's nozzle to its center, and then pulled its trigger.
The result was powerful sound waves being released from the surface of the disc.
*Brrrr*
The sound waves traveled fast, with great power and at a high frequency.
When it was about to reach them, Leng Shi turned and using his gun, shot a white orb which exploded and formed a crystal Ice wall.
The sound waves cracked and shattered the Ice wall. The residual waves then struck the twins, but just that caused them to cough up blood. These sound waves weren't solid and were therefore difficult to block. However, they kept fleeing, for that was that was the only thing they could do.
The Research Rector, upon noticing that Leng Shi and Lei Shi weren't dead, powered her gun and fired again, all the while still inching closer to them because they never stopped their pursuit.