"It's still a low-grade one, so how many golden beads are the top-grade Jiuchen Yuanxi Stone worth?"

Gu Xi's focus is once again not on the same line as others.

Zhou Yuan thought for a while and said, "I have heard of this medium-grade Jiuchen Yuanxi Stone. It is said that one of the top-grade Jiuchen Yuanxi Stones may not be able to buy one. As for the top-grade Jiuchen Yuanxi Stones, I have never heard of it, and I don't even know if it exists in this world."

"Since there are low-quality and medium-quality differences, there are naturally high-quality ones. However, this medium-quality one is so valuable. Even if there are high-quality ones, it must be very rare and rarely comes out of the world."

Gu Xi is a good analytical Taoist.

Zhou Yuan smiled and said, "What Fellow Daoist Gu said is very reasonable, so it should be like this."

But Gu Xuan asked, "Fellow Daoist Zhou, do you know what the function of this Jiuchen Yuanxi Stone is and why it is so precious? I see that the city wall of Shangcheng is indeed full of divine breath and dazzling divine light, but this should be the reason for the large array arranged on the city wall. Could it be that this Jiuchen Yuanxi Stone has something special that we cannot see?"

"Yes, yes, I just wanted to ask about Liumei." Gu Xi said hurriedly.

Gu Xiu also didn't know about the so-called Jiuchen Yuanxi stone. Although she was very good at learning in the Gu family before, she had not practiced for the past ten years and was short of money. Even if she wanted to learn more about the situation in this world, she could only look for the books collected by the Gu family. The Gu family was originally a small family with a shallow foundation and had few books at home.

Later, she started practicing and was able to refine robes. She gradually had extra money in her hands. She was busy practicing and refining robes every day and had no free time. Therefore, her understanding of this world was lacking.

After this trip, Gu Xiu had decided in his heart that he would buy more classics and books in the future, read thousands of books, and travel thousands of miles. This was all a way to increase his knowledge, and knowledge was also part of his practice.

At this time, Zhou Yuan had already begun to explain to Gu Xuan and Gu Xi the special features of the Nine Chen Yuanxi Stone.

It turns out that the Jiuchen Yuanjiu Stone is not an ordinary jade containing divine breath. The biggest difference between it and ordinary things containing divine breath such as gold beads is circulation and absorption.

"Cycle and absorption?" Not only Gu Xuan and Gu Xi were surprised, but several guards next to him who were also completely unaware of this also came over, including Feng Shouhuai.

Because Xia Yingfeng was injured, Feng Shouhuai spent most of his time helping his sister Feng Shougui take care of Xia Yingfeng, and his interactions with the Gu brothers and sisters became much less.

Gu Xiu tentatively guessed: "Could this formation not need to lose the golden beads to operate, but can operate on its own for many years with the Jiuchen Yuanxi Stone?"

"Eighth sister, you're just thinking about it. This formation is a huge formation. Fellow Daoist Zhou said just now that a few seniors in the Xuanshen stage cannot break a hole. If such a formation can operate without losing the golden beads, it would be... simply..."

"You are still good at getting a cheap one!" Gu Xuan thought for a long time but couldn't expect a good description. Gu Xixian said smartly.

Gu Xiu said helplessly: "San brother, I just felt that I had read too few classic books, so I was ignorant. I didn't expect that you, third brother, are not as good as me. What are you describing this?"

Gu Xuan immediately followed Dao and said, "That's right, third brother, why don't you describe robbing me?"

Gu Wang looked at these three younger siblings with helpless look on his face. He thought the eighth sister was a little more steady before. Now it seems that the eighth sister's steady depends on the occasion. In critical moments, she is indeed calm and steady, but at other times, it's fine not to say it.

"Don't argue, there are not many people ahead of us who are going to enter the city. Take advantage of this time to listen to Friend Zhou's good talk."

Gu Wang also specifically reminded Gu Xi, "Third brother, especially you, when you return to Xianshui City, your family and your relatives and friends. If you ask you what you have gained from your knowledge this time, if you can't even say what kind of material is the Shangcheng City Wall and what special things are, you won't have to go out in vain."

Gu Wang taught his younger brothers and sisters a lesson, and then he smiled and asked Zhou Yuan to continue talking.

Zhou Yuan felt a little funny, but he was a steady person and did not show any abnormality. He continued: "What fellow Taoist Gu Xiu said before is right..."

When Gu Xi heard this, he immediately wanted to interrupt, but Gu Wang glared back.

"The special feature of the Jiuchen Yuanji Stone is that it cycles on a nine-day basis, that is, if its divine breath is exhausted, it can absorb the external divine breath within nine days and return to its original state by absorbing the divine breath from the outside.

All the city walls are built with Jiuchen Yuanji Stone. The large array on the city wall is built with the special function of Jiuchen Yuanji Stone to maintain the formation. The loss and recovery time of each piece of Jiuchen Yuanji Stone here are different. Therefore, the divine breath used in the formation can be maintained in the most intense state, and the power of the formation is always in the strongest state."

Since Zhou Yuan said that he guessed correctly, Gu Xiu guessed the relationship and principle between the Shangcheng City Wall and the formation. At this time, although he was shocked when he heard Zhou Yuan explain this, he was not shocked.

Gu Xi and Gu Xuan and others couldn't help but look shocked, "What a big project is this?" "What an accurate calculation is this?"

"Eighth Sister, why are you laughing?" After being shocked, Gu Xuan couldn't help but ask strangely when she saw Gu Xiu laughing alone at the city wall.

"Even the city wall is so unique and shocking. I don't know what the situation is in the city lord's mansion, but I really want to go and see it." Gu Xiu couldn't help but say what he thought in his heart.

Gu Xuan sighed, "I want to go and see it too, but I don't know if there is any chance?"

Although I had a recommendation letter from my grandfather’s friend, I just didn’t know what the rules for selecting new disciples in the Shangcheng City Lord’s Mansion were. I need to go to the City Lord’s Mansion to gather. I still have to ask slowly after entering the city.

"It seems to be us." Feng Shouyang suddenly said.

Indeed, City Lord He and others in front were already talking to the city gate guards.

After Lord He and his group entered the city, it was their turn to follow.

"Are there any invitations?" asked a city gate guard.

"What invitation? Do you need an invitation to enter the city?" A monk said in surprise, and with a hint of nervousness, they worked hard to come to Shangcheng. If they were not allowed to enter because they did not have an invitation, it would be a loss.

"Oh, fellow Taoist don't worry, in another month it will be the birthday of our city lord's wife. At this time, many seniors who were invited to attend the city lord's wife's birthday banquet have already entered the city. The city lord's mansion has arranged residences for these seniors, so this question is...

It doesn’t matter if a fellow Taoist has no invitation. You just need to report your hometown, name and cultivation for statistics.

There are no need to worry about your residence. There are many inns in the city, so you can find a family to live in with satisfaction. There is a map of the city here. You can also get one for fellow Taoists, which is more convenient.”
Chapter completed!