Shen Chaixing was not afraid of the python spirit's bloody mouth, but he was very afraid of the python spirit's ugly face, so he was so frightened that he hurriedly closed the stone door again, and asked Lan Yuedao: "You said that Liu Bang used the 'Longyuan Sword' to kill the snake, is this a folklore or recorded in the book?"

Blue Moon shrugged and said, "It's a folklore recorded in the book. ”

Shen Chaixing said: "Okay, let's see if these two unreliable ones can be more reliable together! It's time to test." With that, he held the Long Yuan Sword tightly in his right hand and opened the stone door with his left hand. Blue Moon was also holding the Tai'a sword in her hand, fully guarded.

The stone door slowly opened, and as soon as the python spirit saw the two of them standing at the door, he bowed down, opened his bloody mouth, jumped up, and pounced on the two.

Shen Chaixing had a sword in his hand, luck was in the sword, and he suddenly entered the realm of no one and no self, and there was no fear in his heart, and the Longyuan sword lit up in an instant, emitting an astonishing white light. Shen Chaixing shook the sword body lightly, "Wow"! The sword body shook violently, and a soul-shocking dragon groan sounded from the sword body at the same time, and the sword body trembled more than once, and the sound of the dragon chant was endless, moving around the beam, as if there was an invisible dragon formed by the sound circling and winding around, and the power was amazing.

The python spirit had just jumped in the air, ready to devour Shen Chaixing, and suddenly, a sword roar of "oooh" hit the python spirit as accurately as a real sharp arrow.

The python spirit was first in the air for a moment, and then fell to the ground, and then the sound of the dragon chant emitted by the Long Yuan Sword made it even more painful, as if it was a life-urging evil talisman, the python spirit rolled endlessly on the ground, knocked down a few stone bookshelves, went around the house, saw that there was nowhere to hide, and rushed out from the door, almost hitting Lan Yu, but scared Lan Yue.

Shen Chaixing saw that the python spirit had fled and dodged, so he put away his true qi, the sword light gradually dimmed, and the sound of the dragon's groan from the sword body slowly disappeared, as if there was really a dragon gradually moving away.

Shen Chaixing put away his sword with satisfaction and smiled at Lan Yue: "It seems that Python Ling has also read the book of folklore you mentioned." ”

The two of them left the stone chamber and walked out of the treasure house. At this time, Shen Chaixing wanted to return from the original way, but was stopped by Lan Yue. Shen Chaixing was about to ask why, but Lan Yue said, "Did you hear that?"

Shen Chaixing listened for a while and said, "Except for the original sound of running water, there is no other sound." Even such a scary python spirit is scared away, what are we afraid of? Why let it come, I just want to try the sword!" As he spoke, he couldn't put it down and stroked the Longyuan sword.

Lan Yue said: "Where do you want to go, just listen to the sound of running water." Don't you think the sound of running water here is different from the sound of running water that you heard shortly after you came in?"

Shen Chaixing listened attentively again, nodded and said, "You don't care if you don't say it, listen to what you say, it's really like this." But what can be done?"

Lan Yue said, "Aren't you curious about where the power to activate and close the mechanism comes from?"

Shen Chaixing said with a smile: "I really have never thought about this problem, it seems that as long as there is a mechanism, it should be able to move as a matter of course, I have never thought about why it can be moved, and where does this power come from." ”

Lan Yue smiled: "Come, I'll take you to see it, it's rare that you can see the core of a large mechanism, to be honest, I've only seen it from books, and I've never seen it in the actual situation like you." As he spoke, he pulled Shen Chaixing to the side.

Lan Yue has been in a much more cheerful mood since she met Shen Chaixing, feeling that there have been more laughs in the past few days than in the past few years combined, and at the same time, he was also moved by Shen Chaixing's sincerity to himself, he saw that Shen Chaixing had an amazing talent, just like an unpolished jade, so whenever he had the opportunity, he would take the trouble to explain some things to him, hoping to help Shen Chaixing's growth.

After walking a few more steps, Shen Chaixing also heard the difference in the sound of running water, the sound of running water he heard when he first entered the treasure was clear and cheerful, or lively and jumping, and the sound of flowing water he heard at this moment was low and powerful.

After turning a corner, a wide waterway suddenly appeared in front of me, all made of square boulders, the waterway was sloped, and the clear and transparent river water rushed from top to bottom, circled over, and turned into a stone cave.

The two walked into a huge stone cave nearby, only to see that in the midst of the turbulent water, a series of huge circular iron wheels were being driven by the water, one by one, spinning endlessly.

Lan Yue explained to Shen Chasing Star that all the power of the entire treasure house mechanism comes from these flowing water that flows day and night, and there are gates in the upstream and downstream of the flowing water, and when the water is full, it will automatically overflow, and after the mechanism is used, the sluice will also be filled with water for a certain period of time for the next mechanism action.

Shen Chaixing asked curiously, "What will happen if the water source runs out?"

Lan Yue said: "If there is no water flow, there will be no power to push the mechanism. However, have you ever heard a saying - all rivers return to the sea. This place is located by the sea, not only a large amount of above-ground water flows into the sea through this, but also countless groundwater flowing into the sea, what you just see is the underground water source, ordinary people will not see. The constant flow of groundwater brings a steady stream of power. This is also the reason why there are many books about the water flow in the bookcase of the treasure, and among the ink gates, there are really wise people like clouds!"

Shen Chaixing just swore to join Momen just now because of the situation, plus seeing that Lan Yue also joined Momen, he just took advantage of the situation, at this moment, after seeing these ingenious designs, and listening to Lan Yue's explanation, he couldn't help but really admire Momen, and at the same time was glad that he was able to be among them.

This place is the heart of the whole treasure, and the two of them stand here and look around, and see that there is a stone gate in the east, west, north and south. Lan Yue smiled, "I bet my dinner that the gate on the north side is the passage to the North Pole Temple. Shen Chaixing heard him mention that he had bet not to eat dinner that day, he laughed, and the two walked towards the stone gate in the north.

Walking through the stone gate, passing through a stone road, the two came to a stone room, the space is not large, there is a winch designed on the wall, and there is another stone plate next to it, and the stone plate is engraved with twelve scales. Outside, there was only an underground river passing by, and there was no passage or stone gate.

Shen Chaixing was puzzled, and Lan Yue had already rolled up the winch one by one. After a while, Shen Chaixing heard the sound of the water flowing outside weakening, and when he went out, he saw that the water level of the bluestone-paved underground waterway had dropped by half and was still falling.

Shen Chaixing looked at Lan Yue puzzled. Lan Yue explained: "The water behind the stone wall that I said in the underground palace of the North Pole Hall that day is this water, and now that I close it, the stone wall door will naturally appear. People often say that the water is out of the water, but here we are the water is out of the door. ”

Shen Chaixing said: "I now remember what you said that day, but you also said that once the sluice gate is closed from the outside, someone must lower the sluice gate from the outside, what if then, one of us is not trapped here, or must go out through the entrance?"

Lan Yue said: "You're right, I underestimated the design of this treasure at the time, and I only knew one and didn't know the other. You see the stone disc with a scale, when the water flow is completely closed by the gate, and the underwater stone gate is revealed, you can turn the stone disc and put it back into the winch. After a certain period of time, the sluice gate will automatically retract and re-release the water, flooding the stone gate. ”

Sure enough, after a while, all the water in the waterway outside was drained, revealing a huge stone door, and the two of them turned the stone plate according to what Lan Yue said just now and put it back into the winch. It was just that the scale of the stone plate was aligned on a scale, and Lan Yue said that this scale could be one hour, a total of twelve hours, and they only needed one hour to be enough.

The two pushed open the stone door that was originally hidden underwater, and after entering, they closed it from the inside, only to hear a "click", and Lan Yue said that the door was locked and could only be entered from the outside.

By the light of the fire in their hands, the two climbed the stone steps, only to see that the steps were covered with moss and aquatic plants, presumably after the stone door was closed, there was still water flowing through the crack in the door. After walking up about a zhang high, this place is already quite dry, and there is another stone door, like the underwater door just now, it is still the kind of design that can only be opened outside but not inside.

The two entered it, and sure enough, it was the secret room that the two had come to that day, but the direction of the two times was different.

The two entered it, Lan Yue smiled faintly at Shen Chaixing, and Shen Chaixing knew that it meant that his dinner was saved.

The two of them had to walk out of this layer of secret passage, go up to another layer of secret passage, enter the wall, and after observing around, they picked a quiet and unmanned exit to come out, closed the passage, and took advantage of the fact that no one was paying attention, and the two slipped out of the Arctic Palace through the corner gate.

At this time, it was still early, and the two of them made great strides towards Taizhou City.

At this time, the two were in a good mood, not only because they had cracked the secret of the "Treasure of King Wu", but also because they had obtained these two immortal swords, holding the swords in their hands, and the people and the swords had a feeling of flesh and blood, as if the long-lost children had returned to their parents. The two of them were afraid that the sword would be too conspicuous and ostentatious, so they found some rags along the way to wrap and bandage them and carry them on their shoulders.

Walking on the wide avenue, when there were no other pedestrians, the two of them each exerted light skills, competed with their feet, and moved forward at full speed, before dark, the two returned to Taizhou City, and still lived in the inn where they had lived before.

After washing and changing clothes, it was already dark, it was the beginning of the lanterns, the two walked out of the inn, looking for a restaurant, and saw the pedestrians on the road in a hurry, although they were tired of a day, but now they can go home. Maybe there are no delicacies of the mountains and seas at home, only coarse tea and light rice, no jade liquid elixir, only a pot of turbid wine, but under the dim light of the bean at home, there are children's smiling faces, parents' nagging, and wife's tender love. And all of this was completely out of touch with Blue Moon, thinking of this, Blue Moon's mood fell to the bottom again.

At dinner, Shen Chaixing told Lan Yue about being chased by Jiang Yulin, and Lan Yue told Shen Chaixing that according to what he said, Jiang Yulin did not report Shen Chaixing's matter to the court in order to monopolize the secret of "King Wu's Treasure", so Shen Chaixing would not be chased and killed by the court or Jinyi Guard, as long as Jiang Yulin was guarded. Shen Chaixing remembered the loss of the child at the door of Uncle Gu's house again, and said that he should go to Qi Shiliang tomorrow and ask him to help find it. Lan Yue just said absent-mindedly, and didn't say much. Shen Chaixing saw that Lan Yue seemed to be preoccupied, so he didn't talk much, and the two went back to sleep early.

Due to the tiredness of the day, Shen Chaixing slept very hard, and he didn't wake up until three o'clock in the morning, only to find that Lan Yue's bed had been cleaned up neatly, but the person was gone. There was a note on the bed where Blue Moon slept that read: Brother, take care!

Blue Moon actually said goodbye!