"Senior," Ni Yuan turned his head to look at Tian Yuan Zhenren and said with a smile, "Are you sure that this sword is in this deep pool underground?" "Of course!" Tian Yuan Zhenren nodded affirmatively, "I've been looking for it for more than a year, two years, ten or twenty years, although its whereabouts are uncertain. But according to the information I gathered, he was only flowing in an underground river. And this is a waterhole of that river! And here there is a vision of heaven and earth, so I'm sure it's in the deep pool of the earth! "Underground river?" Ni Yuan was stunned when he heard this, but then the smile on his face became even happier, "That's even better!" "What do you mean?" Tian Yuan Zhenren stared at him with narrowed eyes when he heard this, "Have you thought of any way?" "Hmm!" Ni Yuan nodded and snorted, and stopped selling Guanzi, "I originally thought that since you must have a hole that you can connect with this deep pool, then since the deep pool can't be explored with your divine sense, what about the surrounding areas of the deep pool?" Is it possible to find the direction of the cave that is connected to it? "Great idea!" Xu Jing's eyes lit up when she heard this, and she said excitedly, "If we can probe that passage with our divine sense, we can naturally follow that passage and find the entrance directly." And if you can't explore it, you can still follow this clue to find the entrance! "Yes!" Ni Yuan nodded and said, "That's what I meant!" And according to the seniors, this is an underground river, so we can just follow the river to find it! We don't even need to use our senses, we can just take the compass and find it! "Good!" When Tian Yuan Zhenren heard this, he immediately clapped his hands and said, "Just look for it!" Although the underground river cannot be compared to the deep pool, the water of this river is different from ordinary water, and there is a sword qi that can block the divine sense, then this compass will definitely react differently from the normal land! "Without further ado," he said, he took out his compass again, glanced at a few people, and said, "Let's start now!" Ni Yuan and the three of them were also in high spirits, and they nodded one after another. Instead of reproducing acting together, they were divided into three groups to act separately. Tian Yuan Zhenren himself, Ni Yuan himself, Xu Jing and Cao Lili were in a group, and the three earth masters began their treasure hunting journey. After some searching, they were depressed again! It is not that the interface of the underground river and the deep pool was not found, but two were found, one south and one north. "Which way?" Ni Yuan turned his head a little helplessly and looked at Tian Yuan Zhenren and asked. "Go south!" Tian Yuan Zhenren thought about it for a while, and raised his head very firmly. "Why?" Cao Lili frowned slightly and said, "What if it's north!" I think we should split up! "Listen to the seniors!" Ni Yuan interrupted Cao Lili's words and said, "Go south!" "Let's go!" Xu Jing looked at Cao Lili and smiled, "We should believe in our predecessors!" Cao Lili pouted, but still followed them and walked south. Let's go fast! Tian Yuan Zhenren said as he walked, "If my guess is correct, the entrance should be in the Yellow Emperor's Mausoleum!" "Senior," although Ni Yuan had been mentally prepared, he couldn't help but feel excited in his heart when he heard him say this, "Is this sword the legendary Xuanyuan Sword?" "That's right! That's him! Tian Yuan Zhenren didn't hide it, "I actually forgot about this, it seems that I was still careless!" "That's normal!" Ni Yuan said, "After all, the Xuanyuan Sword is in the underground river, and the Yellow Emperor's Mausoleum was built by later generations. So no matter from which point of view, the Xuanyuan Sword should have nothing to do with the Yellow Emperor's Mausoleum! "Then is this underground river the legendary Xuanhe?" Xu Jing's eyes lit up as if she suddenly remembered something, and asked. "Not bad!" Ni Yuan nodded and said, "It should be Xuanhe!" "Ni Yuan," Tian Yuan Zhenren glanced at him and asked, "Do you know the legend of the Yellow Emperor who forged the Ding Refining Immortal Pill to save the people?" "Of course I do!" Ni Yuan nodded and said, "Back then, the disaster in the Jingshan area was serious, and the Yellow Emperor came to Jingshan from Kunlun Mountain to inspect when he heard the news. In order to refine the elixir to cure the common people, he picked the copper of the first mountain, drew the water of the lake, and cast the tripod under the Jing Mountain. Legend has it that the Yellow Emperor cast a good tripod, when the Yellow Dragon came to welcome the Yellow Emperor's ascension to heaven, the people begged bitterly, and did not let him go, some pulled their robes, some held hands and dragged their feet, dragged off his golden boots, stripped off the dragon skin, and pulled off the dragon's whiskers. People buried the boots of the Yellow Emperor in the place where he cast the peak, and this became a place for the world to worship their ancestors. And this place is now the Mausoleum of the Yellow Emperor! And in the southwest of the Ling, there is a dragon whisker ditch, which is said to be the place where the dragon whisker fell! There is a kind of dragon beard grass growing here, and it is said that the dragon beard has changed! "Well, that's good!" Tian Yuan Zhenren nodded approvingly when he heard this, "Then have you ever thought about why the Yellow Emperor chose to cast a tripod there?" "I haven't been to the field," Ni Yuan thought for a moment and said, "But as a geomaster, I think it should be the most suitable place to cast a tripod in terms of resources and feng shui geography!" "Nonsense!" Tian Yuan Zhenren twitched the corners of his mouth, and glanced at him angrily, "What's the difference between you and what you didn't say?" "But that's all I know?" Ni Yuan also pouted. "You just pretend to be here!" Tian Yuan Zhenren glared at him, "Since the Casting Ding Alchemy, in addition to having a good feng shui geographical environment, it is natural to be able to use materials nearby. It is said that the pill refined by the Yellow Emperor back then was the water of the Xuanhe River. "Oh, I see!" Ni Yuan pretended to be suddenly enlightened, and arched his hand and said, "Thank you seniors for your advice!" Tian Yuan Zhenren glared at him fiercely, and continued to walk forward quickly. Apparently he had already seen that he had already guessed, and he was just deliberately trying to compliment him. It's just that he doesn't like such compliments very much. Ni Yuan pouted a little boredly, and rolled his eyes to express his grievances. Cao Lili finally understood why he chose this direction so resolutely at this time. Back then, the Yellow Emperor cast the Ding Alchemy Pill and took the water of the Xuanhe River there, so there was naturally an entrance to the water of the Xuanhe River. And the Xuanyuan Sword is in the deep pool in the Xuanhe River, so the entrance of the Yellow Emperor to take the water of the Xuanhe River is the entrance to the deep pool to take the Xuanyuan Sword. Sure enough, the compass directly guided them to the Yellow Emperor's Mausoleum. When a few people sneaked into the Yellow Emperor's Mausoleum, it was already the end of the day. Several people did not dare to delay any longer, but searched the entrance of the Xuanhe River with their divine sense and compass at the same time as fast as possible. In the end, the emperor lived up to his wishes, and was finally found by them. But it is not in the Yellow Emperor's Mausoleum, but in the Longxugou in the southwest of the Yellow Emperor's Mausoleum

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