As an outstanding young man of the 21st century, if Shen Yunhao doesn't even know basic physics, then he has wasted his time taking the college entrance examination.
However, knowledge is one thing, but applying it in practice is not so simple.
Everyone knows the principle of leverage, but to utilize it, both the lever and the fulcrum are essential, and they must be strong enough to support the change in torque and lever arm.
But this is an underground cave, where are we going to find these things?
Shen Yunhao scratched his head, looked at the two pairs of puzzled eyes, and had no choice but to bite the bullet and say, "I need some tools to pull out this spear."
"What tools?"
The dragon girl's voice remained steady, but it was also more lively than before.
When people are dying, they will hold on tightly to any glimmer of hope they have!
"A sturdy stick, preferably long, about ten feet, and some rope..."
The stick serves as a lever, and the rope is used to secure the blood spear and the lever.
As for the fulcrum, all you need to do is build higher stones on the side of the white dragon; that's not difficult.
Seeing that the dragon and the clam remained silent, Shen Yunhao continued, "Anything similar will do, like vines, tree trunks, or anything like that..."
The Seventh Princess didn't speak, but the little clam spirit finally understood, and her eyes suddenly lit up.
"Eeya! Eeya!"
After letting out two excited shouts, it flapped its short legs and ran back the way it came.
"There really is one?"
Shen Yunhao scratched his head.
"What do you plan to do?" The woman's voice rang out again, and the hint of interest in her tone became increasingly obvious.
"By the way, senior, I'd like to ask first, does this halberd only react to demons? Can other inanimate objects touch it?"
"monster?"
The Seventh Princess understood Shen Yunhao's idea after a moment's thought, but she didn't explain. She simply said, "The killing aura only targets the living and will definitely not react to the dead... However, if you want that little guy to exert force through a tool, it is very likely to provoke the Blood Halberd's attack. It would be best if you did it yourself!"
"As expected of a magical artifact, its judgment is so intelligent?"
"???"
"Cough cough..." Shen Yunhao began searching for a rock to use as a fulcrum: "It's alright, whether we can help senior pull this thing out depends on how long the stick the little guy found is..."
In this underground cave, rocks were not uncommon. After about fifteen minutes, the Seventh Princess saw the child stack two huge rocks on his side, about one and a half meters tall, slightly taller than the dragon's body.
"Zzzzz—"
Just then, the sound of metal being dragged on the ground came from the cave entrance behind them.
Shen Yunhao turned around and couldn't help but chuckle.
The little boy, holding a two-meter-long stick in one hand and with several green vines hanging around his neck, ran around with a bouncy gait, looking quite comical.
"How did you find these things in this godforsaken place?"
Shen Yunhao looked in surprise at the two "long sticks" in the little clam spirit's hands.
To be precise, they were two rusty spears, one of which was missing its spearhead and only had a wooden shaft left.
"It must have come down from the Ming River and this little guy found it..."
At this moment, the dragon girl behind him spoke up to explain: "Tianyuan stretches south from Tianshan, across several dynasties, so it's not surprising that something would rush down from the Ming River!"
Shen Yunhao took the spear, weighed it in his hand, and found it wasn't too heavy, about three to four pounds.
“Each one is about two meters long, and if two are tied together, the lever arm should be enough…” As he said this, Shen Yunhao looked at the dark green vines, about the thickness of hemp rope, hanging around the little clam spirit’s neck: “These vines look very fresh. Could it be that there are plants growing in this underground cave?”
"This is the Heart-Gathering Grass, a type of aquatic plant... Generally speaking, there are very few living creatures in the Ming River, but this place is close to the Long Sea, and the drop in the Tianyuan is not high, so it is really possible for this kind of grass to grow."
"..."
Shen Yunhao suddenly had a feeling.
If I had just said I wanted a hundred taels of gold, this little guy could have found it for me from that damn Ming River!
"This is really sturdy. How did you manage to break it?"
Shen Yunhao picked up the wet waterweed and tugged at it, feeling that this thing was much sturdier than ordinary vines.
Then, Shen Yunhao saw the little guy take a piece of grass, turn his head and gently scratch it against the edge of his clam shell, and the grass broke off instantly.
Upon seeing this, Shen Yunhao's eyes widened... Good heavens, this little guy actually has a guillotine built into him!
With the tools in hand, Shen Yunhao got to work.
He first tightly bound the two spears together, flipped them onto the dragon's back, tied one end to the Blood Halberd, and then placed the other end on the stones he had piled up, thus creating a simple lever. He also tied water plants to the other end of the lever so that Shen Yunhao, standing on the ground, could exert force.
"Alright! Now comes the moment to witness a miracle! Senior, just bear with it!"
After saying that, Shen Yunhao took a deep breath, grabbed the drooping waterweed, and pulled it down with all his might!
"roar--"
The intense pain caused the white dragon to let out a low roar.
But at this moment, the Seventh Princess was obviously excited. She could clearly feel the Blood Soul Halberd stuck in her body moving out little by little!
Although extremely subtle, it does exist!
He really did it!
A mortal with no spiritual cultivation whatsoever!
"Oh no! Oh no! Little clam spirit, come and pull me out of here!"
Shen Yunhao felt as if his entire body was hanging on the water plants, but the Blood Halberd remained unbreakable. He could only subconsciously call for help.
The little clam spirit hesitated for only a moment before hugging her without hesitation!
Unable to see, the blue membrane on Shen Yunhao's body once again blocked a beam of red light.
The little clam spirit was much stronger than Shen Yunhao. He grabbed Shen Yunhao and pulled him backward, and with a "plop," the two of them fell backward at the same time.
"roar--"
The next moment, a powerful dragon roar resounded throughout the underground cave!
...
At the same moment, above Longhai, the man in the red robe narrowed his eyes and frowned slightly.
"What's wrong? Did you sense the aura of the Blood Soul Halberd?" someone behind asked.
The man shook his head: "I can't pinpoint the exact location, but... the Blood Soul Halberd has been pulled out!"
"What? Could it be that that little vixen went to the Moon Palace or the East Sea?"
"I don't know... Perhaps they found help in Yunzhou. To be able to withstand the killing aura of the Blood Soul Halberd, their cultivation level must be quite high..."
"So...should we continue searching?"
A flash of bloodlust crossed the red-robed man's eyes, which then slowly faded: "Enough. Without the Blood Soul Halberd to suppress them, the dragon race's physique will quickly recover its self-defense capabilities. If that attracts the people from the Moon Palace, it will be a greater loss than a gain! Send a message to the others, let's retreat!"
"Damn it, we sent so many people and she still managed to get away, what bad luck!"
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