The thing whipped over at an extremely fast speed. With the room being not very spacious, almost at the same time Xia Chuan heard the whooshing sound, he felt a tightness around his waist.

His vision blurred for a second as something thicker than a human body slammed into the place where the door and wall connected, just a few centimeters away from his head.

The steel door panel was smashed, severely dented and deformed. The solid wall shattered, sending fragments flying everywhere. A sharp-edged piece scraped past Xia Chuan's neck.

He felt a slight stinging pain on his neck, like being pricked by a needle. Subconsciously reaching up to touch it, the area his fingertips touched had already swelled up quickly, feeling hot and painful.

Only then did he realize that in that instant just now, Shen Lan had swiftly grabbed his waist and yanked him to the side. Otherwise, it wouldn't have been the door and wall that got deformed, but his skull.

"What is this?" Xia Chuan pulled on the steel door along with Shen Lan a couple times, finding that due to the deformation, it was completely jammed there. It couldn't be opened anytime soon unless they directly smashed a gap in this wall to let the door loosen a bit.

This wasn't a difficult feat for Shen Lan, but he simply couldn't find an opportunity to take action. Because the second heavy strike followed closely...

The two of them didn't even have time to turn their heads. They could only narrowly dodge the heavy blows and the flying stone fragments while rolling and ducking to the equipment side, pressing their backs against the cold steel casing of the apparatus, trying to minimize the space they occupied as much as possible to avoid being hit.

This time, Xia Chuan and Shen Lan finally saw clearly what was attacking them.

It was several huge black tentacles, whipping around the small room with whooshing sounds. Whether for the inanimate objects in the room or for Shen Lan and Xia Chuan, two living people, they posed a devastating danger.

"The wall behind the glass pillar, behind the glass pillar!" Professor Linton could guess what was happening just by listening to the commotion on this side. He was so anxious that he was almost shouting, "That side leads to the underground waterway. The wall is thin, break through it!"

His voice was transmitted into Xia Chuan and Shen Lan's ears through the communicator, almost rupturing their eardrums. However, Xia Chuan had no attention to spare to listen to what he was actually saying.

Each of those black tentacles was as thick as Xia Chuan's waist. Wherever they landed, there was a thunderous sound of explosion and shattering. They were fast and powerful, simply like a demolition team. In an instant, the well-maintained room had been reduced to rubble.

Debris and fragments were everywhere. Steel objects were almost defenseless under those heavy tentacles.

Shen Lan and Xia Chuan had to focus all their attention to dodge at extremely high speed. Each landing lasted less than a second before they had to immediately change to another spot to avoid the huge tentacles that followed closely.

"Break it, break that wall quickly! If you don't break it, you'll die!" The professor had thrown all caution to the wind, roaring inelegantly on the other end of the communicator.

"Damn it, I know I need to break it, but the room is about to be filled up. You come over and take a look!" Shen Lan was very impatient from being urged, shouting even louder than him.

Those black tentacles were still extending and thickening amid the continuous attacks. Xia Chuan followed Shen Lan, finally skillfully circling to a spot near the glass pillar while dodging. Of course, the glass pillar had long been reduced to shattered glass fragments on the ground by now. In the chaos, Xia Chuan's hands were cut all over, bleeding.

Fortunately, this bit of pain was nothing to him. He didn't take it to heart at all. In fact, while dodging without being able to divert his attention, his gaze had been fixed on the center of that mass of tentacles. The black tentacles were too thick, blocking most of his view, so that besides the physical tentacles in front of his eyes, there were only shadows of the black tentacles.

It wasn't until he moved to the center of the room, very close to the center of the tentacles, that he saw Xia Liang hidden in the middle while constantly evading.

Xia Chuan could only see half of his side profile in the gaps. His complexion was still as pale as paper, with a sickly feeling. His face was crawling with bruised blood vessels, looking extremely horrifying. His brows were tightly furrowed.

His originally very good-looking eyes appeared lifeless, yet that lifelessness was mixed with a sense of madness and irritability. In any case, he was completely different from the calm and elegant person from a day ago.

Just looking at him sent chills down one's spine.

It was unknown whether it was due to a difference in technique, but his transformation process was completely different from Shen Lan's.

Every time Shen Lan turned into a mosasaurus, it was only a matter of an instant. Whether in human form or mosasaurus form, his condition was very normal. It wasn't this slow and painful, didn't have such a horrifying visual effect, and had never appeared in this half-human, half-beast state.

He saw Xia Liang suddenly shake his head, seeming to furrow his brows even deeper, as if his irritation deepened from not being able to sort out the chaotic information in his mind. He slightly turned his head, catching a glimpse of Xia Chuan from the corner of his eye, casting a condescending gaze that gave a sense of towering coldness.

When he saw Xia Chuan's face clearly, he seemed to freeze for a moment.

The flailing tentacles paused for an instant, finally giving them a moment to catch their breath in the impenetrable attacks.

Shen Lan seized that split second, hugging Xia Chuan tightly. Without a word, he leaped over a tentacle, his whole body lunging towards that thinner wall.

Xia Liang's stunned gaze instantly turned cold. The bit of confusion from earlier was completely cleared away, leaving only the manic and chaotic murderous intent born from irritation. In an instant, the majority of the tentacles twisted their orientation, chasing after the two's retreating figures with whooshing sounds.

Xia Chuan only felt several huge shadows chopping down on their heads. That force was simply like wanting to smash them into minced meat.

"Right!" Xia Chuan subconsciously called out. Shen Lan reacted in a thousandth of a second, exerting force from his waist to change direction, hugging Xia Chuan and rolling to the left on the spot.

Numerous loud sounds of hard stone shattering rang out in succession, exploding near the two, making their eardrums hurt. Countless sharp stone fragments flew and pelted down on their bodies. Shen Lan completely shielded Xia Chuan beneath him, using his back to block almost all the sharp rubble.

Even for someone as tough-skinned and physically exceptional as Shen Lan, having an entire wall's worth of rubble smashing onto his body made his shoulders and back ache a bit.

They were completely buried by the large and small fragments that instantly exploded, and for a moment, they didn't know what state that wall had been destroyed into.

Shen Lan coughed a couple of times, clearing the dust from his throat. He frowned, propped himself up with both arms, and pushed away all the rubble on top of him. He then reached out and touched Xia Chuan's head and face, asking, "Are you hurt?"

Xia Chuan shook his head, indicating he was fine. But when he looked up, he saw that more than half of the wall in front of them had been smashed open, revealing the sound of trickling water and a chilling draft coming from the gaping hole.

Shen Lan: "..."

The strength of Xia Liang's tentacles was beyond their imagination. If they had actually been hit, the consequences would have been unthinkable.

But as soon as they poked their heads out, before the sense of relief could even surface, another wave of attacks came crashing down fiercely. Without a word, Shen Lan quickly lifted the rubble behind him and scooped up Xia Chuan, leaping forward again.

However, because he was carrying a grown man and had to act hastily without sufficient leverage, his legs scraped hard against the jagged edges of the broken wall as his upper body crossed over the top.

Xia Chuan hissed and instinctively looked back. At that critical moment, he saw a tentacle smashing down towards Shen Lan's back.

If that blow had landed, it would have definitely resulted in a shattered body and ruptured internal organs for an ordinary person.

Xia Chuan's pupils instantly constricted. He twisted his body, hugged Shen Lan tightly, and swung hard, using the momentum to dodge. The tentacle, with its immense force, slammed into the ground, shattering the remaining bits of the wall foundation.

The momentum sent Xia Chuan and Shen Lan crashing to the left.

Just as Professor Linton had roared over the communicator, the wall was indeed thinner on this side, and there was an underground river channel behind it, which was much more advantageous for Shen Lan compared to the dark and narrow tunnels. However, the underground river was not spacious everywhere. At least the section right behind the wall was quite narrow.

Xia Chuan felt his back slam hard against the jagged rock wall on one side of the river channel. The surface was uneven, with sharp edges and extremely hard. He could almost hear his spine crying out in agony.

At that moment, he felt as if the skin and flesh on his shoulders and back were about to be torn open by the edges of the rock, undoubtedly badly lacerated. Blood and swelling followed, stinging fiercely, as if someone had whipped his back several times and then mercilessly poured fresh chili water over it.

Shen Lan cursed under his breath. He grabbed Xia Chuan's waist with one hand and the back of his head with the other, pressing Xia Chuan's entire body tightly into his embrace. "Bear with it. We have to get out," he said.

With that, he wrapped himself around Xia Chuan and jumped into the underground river.

Xia Chuan had thought the wounds would be excruciatingly painful the moment they touched the water. His thin cheekbones twitched, and he even clenched his teeth, ready to endure it. But to his surprise, the pain on his back had already exceeded his expectations.

When it came into contact with the cold underground river water, it was overstimulated and became somewhat numb, and even the previous pain became less intense and sharp.

Shen Lan didn't dare to delay for a moment. Holding Xia Chuan, he immediately dived and swam a long distance downstream at an astonishing speed.

But he still couldn't relax, because behind him was an even more astonishingly huge creature in pursuit, and it had gone berserk.

This section of the river channel was indeed narrow. Shen Lan didn't transform back into his mosasaurus form, otherwise he would have gotten stuck here if he wasn't careful. But the crazed Xia Liang behind him paid no heed to this point.

He chased after them from the room that had turned into ruins, along the river channel, in a nearly reckless, unstoppable manner. While swimming at an extremely fast speed, his tentacles smashed the rock walls on both sides without any sense of pain.

In an instant, the entire river channel was filled with rumbling and explosions, and rubble flew everywhere, like an unavoidable barrage of hidden weapons. Dust and tiny fragments scattered, forming a choking haze that shrouded the entire river channel.

As Shen Lan swam forward at top speed, he hurriedly glanced back and saw Xia Liang's huge figure rapidly approaching, almost catching up to them in the blink of an eye.

"Can I hit him?" Shen Lan couldn't take it anymore and surfaced from the water, shouting next to Xia Chuan's ear.

Xia Chuan was even more fed up. He turned his head and shouted back, "Why are you even asking? Just hit him!"