Yuandong himself went out of the cave, and asked the servants to cut five pine trees on the mountain, and tied them into wooden rows with ropes to reach the cave entrance. A dozen servants took a lot of effort to lift the pine into the hole.

Chiyun Yuexuan directed the people. First, he made a bracket of two trees, tied several pieces of wood with a rope, and placed them safely on the opposite rock wall. A temporary wooden bridge connected the two ends of the underground river. Yuan Dong dismissed the rest of the people, and six people carefully crossed the wooden bridge and walked to the opposite side of the dark river. Think of the dark river under your feet. Everyone is in a cold sweat.

Chiyun Yuexuan felt for the stone gate and carefully looked for the breach. On the left side of the gate, there was a tree leaf shaped groove.

Chiyun Yuexuan takes Biwu from his front: "this is the key to open the treasure. The fourth Prince first hands over the antidote of Miss Tuoba and the princess."

Gao Chenghao sneered: "if I hand over the antidote, what capital will I open the treasure with you? I'm afraid I can't even protect my life. General chiyun, is this to force my king to be cruel to the princess? In order to show sincerity, I can give Miss Tuoba's antidote first, but the princess's antidote. How can I take risks with him? "

Gao Chenghao reached for a paper bag and handed it to Yuandong: "in order to show his sincerity, I gave up Miss Tuoba's antidote. General Huyan is here. He shouldn't be joking about the princess's life. Don't be lucky to scold general Yun. "

Chiyun Yuexuan clenched Biwu: "if the stone gate is opened, it is as empty as in Xingzhou, should your highness also give us the princess safely?"

Gao Chenghao's face was grim: "is this to amuse the king? If you want to find a place, say it's a treasure, you want me to take the poison? "

Chiu Yun Yuexuan said angrily, "my general is just an analogy. If there is no treasure, would you like to give me the antidote and the princess?"

Gao Chenghao shook his head: "impossible. It's better to have what Ben Wang wants in it, otherwise It's a big deal. "

If chiyun Yuexuan is not worried about Murong Zhining's life, he really wants to push Gao Chenghao to the bottom of the cliff: "if we don't talk about good conditions, I won't be able to open the door."

Gao Chenghao said coldly, "if general chiyun doesn't cooperate, my king will tie the princess in and let his men in to break the door."

Yuan Dong saw that the two men couldn't fight, and shouted: "no, our ancestors of Tuoba family said that Murong family set up the treasure mechanism in a deliberate way to prevent the treasure from falling into the hands of others. If the door is forced to break by external force or opened abnormally, the mechanism will be triggered, causing the place where the treasure is stored to collapse and sink into the underground river. If your highness wants something, please open it according to the method of safety. "

Tuoba Zhi also echoed: "now our Tuoba family is out of your control. We only allow you to enter the treasure. If you can't get what you want, it's up to your luck."

Gao Chenghao disdains a smile: "that king had to put treasure all on Princess body, this king does not believe, you do not care about her safety."

Gao Chenghao turns around and walks to the entrance of the cave. He loudly orders the bodyguard to send Murong Zhining to the entrance of the cave. In order to get the secret of Emperor Qin and leave, he only has the move of chess.

Gao Chenghao pulls Murong Zhining into the hole: "Ning Er is good, and the master will take you to play treasure hunting. You're going to stay behind the master for a while, you know? " Murong Zhining cleverly places her head: "OK, Ning'er will listen to the master."

Chiyun Yuexuan sees that Murong Zhining is brought in. She worries that when she crosses the bridge, she will be afraid of danger. She quickly finds a rope to tie on the stone pillars on both sides of the bank. Murong Zhining holds the rope, and Gao Chenghao holds it across the bridge. She holds Gao Chenghao's hand tightly.

The noon sun fell from the cave above, and the cave became bright. Chiyun Yuexuan takes Biwu and puts it in the groove beside the door. People looked at the stone gate expectantly, but there was no movement at the stone gate.

Murong Zhining looks at Biwu curiously: "this jade looks familiar. Where do you see it?" Chiu Yun Yuexuan bet airway: "of course, this is the general's dowry to the princess, the princess forgot to be clean." Murong Zhining retracts Gao Chenghao's back in fear and tightly grasps his skirt.

Gao Chenghao looked to the place where Biwu was put: "general chiyun only thinks of the princess in his heart, and he has no mind to do anything else. Long snack bar, there is a groove next to it. "

Even Kun Wen Yan looked at the door and said, "what's in such a big pit? Who designed the treasure that needed such a big key? "

Chiyun Yuexuan realized: "this is the place where the Guqin is played. It's in the hands of the fourth prince. The fourth prince, please let someone bring it in. "

Gao Chenghao said: "I want to take care of the princess. Please go to the cave and ask my men to send the Qin."

When Lian Kun was ordered to go to the entrance of the cave to get the Qin, he shouted to the guard on the other side, "the fourth Prince of your family asked you to send the Qin here." Tuobalan shouted excitedly, "even my brother and princess can go in, I will go. I also want to go in and have a look. "

Lian Kun was afraid of her trouble and said, "do you think it's fun? There's a lot of scary stuff out there Tuoba LAN is very headstrong. She forcibly follows the bodyguard to the entrance of the cave by boat.Lian Kun shouted angrily, "you know that willful Hu Wei will change when the situation changes, but no one will protect you."

The bodyguard holds the Qin and follows him into the cave. Seeing Gao Chenghao nodding, he hands the Qin to Lian Kun and takes it to the other side.

Lian Kun put Fengyin in the stone groove beside the door. The size of the Qin fits the groove very well. Everyone's eyes were fixed on the stone gate, looking forward to the miracle. The stone gate is still motionless, and everyone's eyes are full of doubts. It's clear that both things are just right, but it seems that there are some details missing. The door just can't be opened.

Gao Chenghao can't hold his breath. He grabs Murong Zhining's hand and clutches it involuntarily. Murong Zhining's voice broke the silence: "master, you have scratched her hand. If the door can't be opened, will it be because the sunlight on the top doesn't shine on the leaf that opens the door? "

After hearing Murong Zhining's words, they all looked at the gap on the top of their heads. Gao Chenghao smiled and said, "my king's Ning'er is the most intelligent, obedient and silent."

Chiyun Yuexuan glanced at Murong Zhining lovingly, then looked at the hole the size of the copper basin on the top of his head, nodded: "the princess said it is reasonable, we will wait and see if the sun will shine."

Chiyun Yuexuan observed a column of incense time: "this sun can not shine here, you see here, just a prominent stone block." Everyone was a little depressed, and no one spoke for a while. Gao Chenghao was eager to find treasure and said eagerly, "according to the king, it's better to smash the door quickly."

At one time, the views were divided into two groups: those who advocated smashing the door and those who advocated smashing the rock.

Chiyun Yuexuan shouted: "don't argue, neither is feasible. I'm afraid that if I smash the door, as the elder said, the treasure will sink into the dark river. I carefully observed that even if I smashed the stone screen, the sun might not shine in. Think again, there will be other ways. "

Murong Zhining pulls Gao Chenghao's clothes and says timidly: "master, you can try it with a mirror. Two mirrors should be able to bring that light in. " Gao Chenghao touches Murong Zhining's face: "Ning'er is really smart."

Chiyun Yuexuan angrily picks up a stone and smashes it on Gao Chenghao's wrist like a warning. Murong Zhining pouts and glares at yunyuexuan: "master, this man is very impolite. Ning'er doesn't like him." Gao Chenghao said with a smile, "well, don't care about him."

Yuan Dong asked people to look for a mirror. Several people sat in the cave and ate the dry food brought in. Murong Zhining sits quietly next to Gao Chenghao, and the little bird leans on him, rebukes Yun Yuexuan and stares at Gao Chenghao angrily.

Tuoba blue looks at Murong Zhining from afar: "princess, have you forgotten Lan'er? Gao Chenghao is not a good man. Don't believe him, princess. "

Murong Zhining glances at Gao Chenghao with doubts. She has a natural sense of trust for Tuoba blue: "master, why do they call me princess? Why do other people have family, but Ning'er doesn't? "

Chiyun Yuexuan glared at Gao Chenghao: "who says you don't have a family? The beast beside you forces you to eat terrible things, which makes you forget your family. "

Gao Chenghao looks at Murong Zhining tenderly: "didn't the King say that? Ben Wang is your family. Everyone else wants to hurt you. " Murong Zhining mumbled, "but..." Gao Chenghao seemed impatient: "no, but. Don't you believe the master's words? "

Tuoba LAN sees that Murong Zhining believes her words and keeps shouting at her sister. Murong Zhining's question on her face is deeper and deeper. She pouts and looks unhappy. Tuoba Zhi whispered a few words to Tuoba blue, and Tuoba blue nodded.

From time to time, someone sent the mirror. Chiyun Yuexuan and Tuoba Zhi are each holding a mirror and constantly adjusting their houses. Tuoba Zhi reflects the sun on the mirror in chiyun Yuexuan's hand, and then chiyun Yuexuan leads the sun to Biwu.

With their efforts, a ray of light fell on Biwu. Biwu issued a light green halo, which reflected on the stone gate. When the halo moved to a small hole in the middle of the stone gate, a miracle finally appeared. Only heard "bang bang bang" a burst of sound, like the start of the mechanism inside, the stone gate was suspended by the chain, slowly moving up, revealing a stone chamber inside.

When they looked into the stone chamber with great expectation, they could not help falling into the ice cellar. The stone chamber is empty. There is a stone gate in front of it.

The light in the stone room is dim. A row of torches are inserted in the rock wall. After a trial, they can ignite.

In the light of the fire, the stone room looks broad and bright. Chiyun Yuexuan has observed for a while. To go to the inner stone gate, you must pass a huge stone square array.

The square is very similar to a giant chess board. It is divided into left and right sides. There are twenty-four copper basin sized and raised round stone pillars on each side. The surface of each stone pillar is engraved with different figures. On the left are twenty-four animal patterns, and on the right are twenty-four hexagrams in the book of changes.

The stone column is like a movable type plate for printing, as if stepping on it will fall to the same level as the ground. Chiyun Yuexuan stood in front of the square and pondered, not daring to act rashly. To get to the stone gate, you must step on the stone pillars on both sides. This huge chessboard is not only like a formation, but also like a trap with hidden mechanism.

Even Kun rashly raised his feet to step up, chiding yunyuexuan and dragging him back. Lian Kun stares at chiyun Yuexuan discontentedly, but chiyun Yuexuan doesn't speak. He just picks up a stone and throws it on the stone pillar. He only listens to the sound of "brushing". A spear stretches out from under the stone and quickly shrinks back.