Following Zhang Yi all the way forward, Yun Xiang couldn't help but come forward and inquire: "Brother Zhang, I still can't figure out how we met in the illusion just now. Can you give me some advice?"

Zhang Yi smiled faintly and said, "Aren't you quite smart? Why can't you even understand this?"

Yun Xiang hurriedly said, "Brother Zhang, please speak, listen carefully."

Zhang Yi Youran said: "The fish in the dream is still a fish, and you and me in the illusion are also you and me. You told me this truth, why did you forget it myself?"

Yun Xiang suddenly realized that he was still worried about the debate about losing to him just now, and he probably couldn't imagine any useful information from him. People in the world say that Zhang Yi is narrow-minded, and it seems that it is not groundless.

After walking along the canyon for more than twenty minutes, a hole appeared on the wall on one side, with the words "Tianji Cave" written on it. Yun Xiang and Mrs. Jiu Tai ran for so long but didn't see the hole, but at this time the hole appeared.

The three of them went straight into the cave. Inside was a winding corridor. After walking along the corridor for more than ten minutes, they suddenly realized that they seemed to have entered a huge circular valley. The mountains in the valley were full of flowers and trees, which was a vivid image.

Among the mountains and trees, some small thatched huts can be seen vaguely, which looks quite interesting. At this time, it was getting late, and many thatched huts were already lit up, which reflected the extraordinary spirit of the place. In the middle of the valley, a slightly tall thatched roof can be seen from afar. Lady Jiuwei pointed to the roof and whispered: "Little toad, the master lives there."

Yun Xiangqi said: "Have you been here?"

Lady Nine-tail said, "I've been here, the last time I met my master there."

Yun Xiang said: "Then the other houses are all your senior brothers?"

Mrs. Nine-tail nodded and said, “That’s right.”

Yun Xiang thought and asked again: "Then why don't you look around? Maybe Hu Ning's virtuous nephew is also among them."

Lady Nine-tailed said, "No, every grass and tree in this valley are all the formations set up by the master. Once unfamiliar people go in, they will not be able to get out if they are trapped inside."

When Yun Xiang heard his mention, he remembered that Guiguzi was also a master of formations, but I was afraid that this Tianji Cave was not as simple as it seemed.

Next, his idea was quickly confirmed. Zhang Yi led the two of them all the way to the house in the middle, but refused to go straight, but instead made a circle of twists and turns, sometimes even going in the opposite direction.

Yun Xiang knew very well that this should be the path of formations in the valley. It was indeed extremely complicated. If he didn't understand the truth, he could not remember them even if he wanted to. Although he had never seen the formation, he must have been famous for a long time, and he even admired Guiguzi in his heart.

Although the valley looked quite small, under Zhang Yi's leadership, the three of them arrived outside the house in just a few minutes. It felt shorter than the straight line distance, which was obviously the magical part of the formation.

The house is actually just a two-story thatched hut. Although it looks much larger than ordinary thatched huts, it is quite simple. However, Guiguzi is a paradise, and such a residence seems to be more commensurate with his identity.

Zhang Yi came to the door carefully and was about to speak when he heard an old voice in the room: "Since the guest has arrived, just come in."

Upon hearing this, Zhang Yi nodded to the two of them, and then led them to push the door in.

This thatched hut is actually less than one hundred square meters. The room is extremely simple and has nothing. There are only dozens of straw mats on the ground, looking like a classroom. At the bottom of the house, there was a white-haired old man sitting upright. He must be the most stunning Chinese man who has passed down through the ages - Guiguzi.

The Guiguzi was wearing a gray coat and looked a little worn, with his hair casually scattered, but he looked a little unkempt. One of his face was full of wrinkles and looked extremely old, and there were four huge sarcoma on his forehead. At first glance, he looked really ugly.

It's okay to look ugly, but what's even more surprising is what he is doing at this time.

I saw hundreds of square small stones piled up in front of him, like a pile of building blocks. He was concentrating on stacking the small stones together. It was hard to believe that this was an extremely wise old man.

Zhang Yi seemed to be used to this, and walked forward respectfully and whispered: "Master, Jiu Tai Junior Sister and Yun Xiang have been brought here."

Guiguzi didn't raise his head, but still focused on fiddling with the stones, and said casually: "Okay, you go out and rest, just leave them here."

Zhang Yi responded, and tiptoed out again, as if afraid of disturbing Guiguzi.

Yun Xiang and Mrs. Jiu Tai did not dare to be negligent, so they hurriedly stepped forward and bowed: "Yun Xiang, Jiu Tai, pay homage to senior (master)."

Guiguzi still didn't look at them, but just said, "Let me find a place to sit, and I will talk to you in detail when I finish my work."

The two looked at each other without saying anything. They found two straw mats nearby to sit down. The Nine-tailed Lady looked at her nose and her nose, and looked at her heart with great respect, while Yun Xiang looked at Guiguzi's behavior boredly.

After a closer look, he finally understood what Guiguzi was doing. He built up the stones layer by layer, as if he wanted to build the shape of an arch bridge. Unfortunately, the shape of the arch bridge he had stacked out seemed too tall, obviously not very stable, and was already a little shaky.

Finally, the arch bridge he built reached the most critical part, that is, the center position. He gently picked up a small stone and carefully placed it in the middle. As long as he could be placed firmly, the arch bridge would be built.

Of course Yun Xiang is familiar with the gadgets like building blocks. When he saw this unreasonable way of setting up, he couldn't help but remind him: "Be careful, it's going to fall."

As soon as he finished speaking, he heard a clamor, and the two stone pillars fell down. Small stones were scattered everywhere, which made Yun Xiang feel quite embarrassed and bowed his head and said nothing.

Guiguzi sighed, shook his head in disappointment, and then raised his head to look at Yunxiang and said, "How do you know it will collapse?"

"This..." Yun Xiang was hesitant. The opposite side was an elder and a master with great cultivation. Suddenly, he asked this question, and he couldn't think of a suitable word to answer.

Guiguzi seemed to see his concern and said, "If I ask you, you can just say it directly, don't worry."

Yun Xiang nodded and said, "Senior Guigu, the reason why I think the thing you built will fall down is because the structure is simply unreasonable."

"Is the structure reasonable?" Guiguzi was stunned and said strangely: "Then what kind of structure is reasonable?"

Yun Xiang said: "The purpose of the senior is to build an arch bridge?"

"Arch Bridge?" Guiguzi frowned and pondered for a while, then nodded and said, "This name is appropriate, it's not bad. I'm just going to build an arch bridge."

Yunxiang just now remembered that the structure of the arch bridge had not appeared in this era, and it is no wonder that Guiguzi had never heard of it.

He accused him of guilt, got up and walked forward, skillfully stacking out the shape of an arch bridge with stones. This is certainly not difficult for a modern man who grew up playing with building blocks and sand. After stacking it up, he said: "Senior, please see, this shape of arch bridge is more reasonable. Not only will it not fall, but it can also put things on it."

As he said that, he picked up two stones again and placed them on the arch bridge, which remained unmoved.

Guiguzi stared at the small arch bridge he built for a long time, nodded and said, "No, this is indeed more reasonable, you really have some knowledge." After saying that, he waved his hand and all the small arch bridge and the rest of the stones disappeared, and I don't know where they were received.

Yun Xiang did not dare to lose his manners, so he quickly bowed to the other party again, retreated to the straw mat and sat down.

Guiguzi looked at him and Mrs. Jiutail and said, "Now, we can have a good talk."
Chapter completed!