"How do you know this so clearly?" Xu Zun asked.

"Yes...... That's the ......," Li Jinlou recalled, "Tie Lao saw that Cao Ding liked the ancient map of his house so much, so he paid a lot of money one after another, and Cao Ding's limited property couldn't catch it at all!"

"However, that Cao Ding really loved the ancient maps, and he didn't want to give up, so he asked someone to find me to match," Li Jinlou said, "He entrusted the Ministry of Industry to win the way, so that I and the Ying Shilang came forward to make it clear, so that Tie Lao lowered the price and sold the ancient maps." ”

"The batch?" Xu Zun grabbed the words, "What's the matter?" ”

"Yes," Li Jinlou nodded, "They are all ancient maps of Xuanmiao City, it seems that there are all dynasties, basically hand-drawn, and some of them look a little old!" ”

"Tie Jing has all been sold to Cao Ding?" Xu Zun asked again.

"yes, yes...... Right? Li Jinlou said, "To put it bluntly, I'm just a middleman, I don't know if there is any stock in Tie Lao's house!" ”

Hearing this, Xu Zun turned around and asked the steward of the Tiefu and the others, "Do you know about this?" ”

"My family ......," said an old woman, "Our Tie family ancestor did serve as the supervisor of the former Imperial Survey Society, and I have also seen the ancient maps you mentioned.

"My grandfather was also interested in those maps, and he used to show them a lot, but then he never saw them......"

"Good!"

Xu Zun glanced at Li Xing, Li Xing immediately understood what Xu Zun meant, and immediately took the old woman away and asked her to help find it to see if Tie Jing's house still had inventory.

"Li Yushi," Xu Zun asked Li Jinlou again, "Think about it again, apart from Ying Rang and Cao Ding, who else knows more about Tie Lao's ancient maps?"

"Of course, it's Tie Lao himself!" Li Jinlou said without thinking, "Isn't he helping out in the Internal Guard Mansion? You ask...... Hmmm......"

Suddenly, he saw something from the expressions of Xu Zun and the others, and immediately closed his mouth and stopped making a sound.

"Hey, what about you!" Ani stabbed him with her scabbard and asked, "Who else knows but Tie Lao?"

"Also...... and Liu Jin...... Oh......" Li Jinlou realized that Liu Jin was no longer alive, and said, "Tie Lao is very knowledgeable and has a wide range of friends, I ...... I can make a list for you.

"But I don't know who knows about those maps."

"Okay." Xu Zun nodded at Ani and asked Li Jinlou to write the list to Ani.

However, just as the two were about to go to the side, Xu Zun remembered something and asked Li Jinlou: "By the way, Cao Ding didn't say it, what is the use of those maps he wants?" ”

"Hmm......" Li Jinlou pondered for a moment and replied, "It seems that you just like it, right?" Well...... It seems like...... He said that those ancient maps showed that there were ancient water hubs or ditches or something, maybe ...... How did it help him with his water conservancy project? ”

Hearing this, Xu Zun suddenly felt his heart tremble, and a cold breath went from his head to his feet.

Don't...... As I guessed before, this is the Heavenly Tribulation that Xuanmen really wants!?

"Xu Zun ......" At this time, Chen Taiji, who had been beside him, couldn't help but pull Xu Zun aside and asked, "What...... Do you think there's a problem here? ”

"Lord Chen," Xu Zun asked, "I've heard you say before that the Holy Capital Xuanmiao City was built on the original ancient city, right?" ”

"Yes!" Chen Taiji nodded, "When I was a child, I heard people say that there were old people who called Xuanmiao City the sixfold ancient capital. ”

"Sixfold Ancient Capital?" Xu Zun was curious.

"Xuanmiao City is known as the center of the world, because of its geographical location and strategic elements, so there are more than a dozen dynasties in history, all of which have built this place as the capital." Chen Taiji explained, "In addition to those short-lived dynasties, counting my Daxuan, there are six dynasties that have built a capital and built a city here!"

"After all, the country is limited, and when it was built, most dynasties would build on the original site.

"Either renovated or covered, over time, it became a city on a city, creating today's six-fold ancient capital!"

Oh......

Xu Zun pondered seriously and muttered: "If you say this, in the underground of this Xuanmiao City, there is another mystery?" ”

"Yes, that's true!" Chen Taiji affirmed, "The people in their engineering department know best that many construction projects will encounter the same problem, that is, digging down the ground, there will always be ancient relics, resulting in an increase in the amount of work and a delay in the deadline."

"Sometimes, we even have to choose another site to build again."

"That'...... Is there a saying for this aqueduct or the like? Xu Zun asked again.

"Yes," Chen Taiji replied, "since the holy capital was built on top of the ancient capital, then the culverts and ravines left in the past are naturally all underground.

"It is said that those culverts can still be used to dredge and drain silt, which is why there has never been a flood in Xuanmiao City for hundreds of years."

Dungeon ...... Culvert waterways......

Xu Zun associated them together, and asked Chen Taiji again: "Those culverts and waterways, can people get in?" ”

"This ......," Chen Taiji shook his head, "I don't know!" I'm afraid I'll have to ask someone from the Ministry of Industry about this kind of thing.

"Actually......" he looked around and said regretfully, "In the entire Xuanmiao City, I'm afraid only Tie Lao is the most proficient in this kind of thing.

"I heard before that the cabinet intended to recruit Tie Lao to serve in the Survey and Design Institute, but Tie Lao refused, after all, this Dali Temple has a lot of oil and water!

"Xu Zun......" Chen Taiji asked in a low voice, "Do you think that they suddenly killed Tie Lao because they didn't want Tie Lao to tell the secret of the ancient city culvert?" ”

Xu Zun nodded slightly: "I guess, in Cao Ding's house, when Tie Jing talked to Dongfang Shenzhu, he may have remembered the transaction he had made with Cao Ding, and then Cao Ding's housekeeper heard it, so he didn't hesitate to expose his identity and kill Tie Lao!" ”

"In that case...... This matter is very important, but ......" Chen Taiji frowned, "I really can't think of those ancient culverts that have existed for thousands of years, what can the Xuanmen do with them?" ”

"Water?" Xu Zun asked.

"Impossible!" Chen Taiji shook his head, "Although I am a layman, I also know that Xuanmiao City is high, and without those culverts, it is impossible for floods to occur.

"Besides, the water is brought in, and if there is a big flood, the river water will also flow downstream along the Jinyin River......

"Then ......," Xu Zun asked again, "what if explosives are used?" ”

At this moment, Xu Zun completely imagined himself as a Xuanmen rebel party, thinking about how to cause the greatest damage to this impregnable historical ancient city.

He thought that as soon as his words came out, he would cause Chen Taiji to be shocked.

Who knows, after hearing this, Chen Taiji waved his hand again and again:

"Then it's even more impossible! Although the power of explosives is not small, if you want to blow up Xuanmiao City or the Imperial Palace, it is simply a fool's dream! ”

"Really?" Xu Zun said, "Since there is a gap under the Holy Capital, then bury the explosives in it......

"Impossible," Chen Taiji didn't wait for Xu Zun to finish speaking, and then gave a negative answer, "I understand what you mean, do you want to say that Xuanmen wants to blow up Wanfu Palace?"

"Do you know how much explosives you need?" Chen Taiji gestured, "With the best gunpowder in the world, there are tens of thousands of boxes!" Do you think it's possible?

"Besides," he added, "the foundation of the Wanfu Palace was laid in advance, so it can't be empty underneath!" ”

Really?

Listening to Chen Taiji's words, Xu Zun fell into deep thought, water can't work, fire can't work, so what can the Xuanmen rebel party do by using these ancient city culverts?