After leaving the hall, Xu Ran bought some supplements and fruits, took a taxi and went straight to the hospital.

After these days of treatment and observation, Song Wenli's condition has begun to improve, and he has been transferred from the intensive care unit to the dry rest ward.

"Xiao Ran, you're here!"

When Xu Ran pushed the door and entered the ward, he saw that Song Wenli's sons and daughters were there, and Song Wenli's spirit was not bad.

After Xu Ran put down the fruit, he walked to the bedside and was about to ask the teacher's physical condition, but Song Wenli opened his mouth first and said: "Xiao Ran, Lao Yang called me last night to tell me a good news, Tan Nian and they were saved!"

"Oh, that's great news!"

Xu Ran also came to his senses and said, "Teacher, Brother Tan Nian has been trapped in the ancient tomb for many days, since he has been saved, what is the situation now?"

Song Wenli said: "As far as I know, Tan Nian was in good spirits when he was rescued, he was just a little dehydrated, and he was not hurt by other injuries, and the student of Qing University who was with him was almost in shock, and his spirit was in a state of collapse, I am afraid that it will take a long time for spiritual counseling and treatment......"

Nasha Haigouzi is now in a state of military blockade, Xu Ran doesn't know much about the situation there, what Xia Tanhe did after he went back, and he didn't contact him, he didn't know anything, and he could only learn from other people's mouths through understanding.

Hearing that Tan Nian was successfully rescued, Xu Ran also calmed down and said, "Teacher, after Brother Tan Nian and the remaining archaeologists are saved, will the archaeological work there be over?"

Song Wenli shook his head: "Maybe our archaeological work is over for the time being, but the scientific research work will continue, there are too many strange phenomena hidden in the ancient tomb that cannot be explained by science, this time there is enough Lao Yang and them to stay there for a while!"

Speaking of which, Song Wenli asked his son to bring a small bag.

After Song Wenli got the small bag, he opened the zipper, took out a small box from the small bag and handed it to Xu Ran.

"Xiao Ran, this is the Xixia silk book you found from the porcelain fragments last time, during this archaeological work, I asked two old friends who know ancient Xixia to translate that text......

Xu Ran took the box and opened it, and saw that there was still a piece of paper pressed on the silk book, so he stretched the paper open, and saw that it was a piece of text that someone had copied by hand.

The content of the text is translated into nothing special, that is, it records the process of praying for rain when Master Zhending opened the altar to worship the heavens, and the incantation recited when praying for rain.

It's just that when Xu Ran saw those spells, he found that there were still some irregularly arranged numbers in the spells, and he couldn't help but wonder: "Teacher, what did the ancients use this way of counting for?"

Song Wenli said: "In fact, in the Song Dynasty, in the discipline of mathematics, the ancients' research attainments are still very deep, there are six sets of digital records on this silk book, people who have not been engaged in the study of ancient documents in this area really don't know what it is for, and I have seen a few documents and just know that this group of numbers is actually arranged according to modern Arabic numerals, they are actually a three-dimensional coordinate value!"

"Three-dimensional coordinates!"

Xu Ran was taken aback, and after carefully looking at the digital content of the coordinate value, he said, "Teacher, the ancients actually used three-dimensional coordinates to record, so when you investigated, can you determine what place it is?"

Song Wenli said: "In the process of inspecting the ancient tomb, I have always had an idea, guessing whether the coordinates recorded in this silk book are in the ancient tomb, we have done several experiments, and we have not been able to confirm this idea.

And it wasn't until the end of the expedition, after we discovered the neglected place, and my own personal experience, that I was able to determine that this coordinate point was most likely the mysterious altar that Mint had stumbled into by mistake......"

Hearing Song Wenli say this, Xu Ran paid attention, he recorded the set of coordinates, and planned to recalculate whether it was a little different from his guess according to the coordinate clues left on the space key after he went back.

After chatting with Song Wenli for a while, Xu Ran was about to ask Tan Nian if they would be sent to the hospital for recuperation, but Xu Ran's phone rang.

It was Xia Tanhe who called.

After Xu Ran picked it up, he listened to Xia Tanhe's voice a little excited, and said, "Xiao Ran, Tan Nian is saved!"

Xu Ran said: "Sister Mint, how is Brother Tan Nian's physical condition now?"

"When I came out, it was mainly due to dehydration, and now I am playing a hanging bottle infusion, which is much better!"

Xu Ran asked with some curiosity: "Sister Mint, how did Brother Tan Nian get rescued?"

After hesitating for a moment, he heard Xia Tanhe lower his voice and said, "In fact, after Tan Nian and the others escaped from the ancient tomb, the distress signal that they took the initiative to send out in the place of Haili Shawo was discovered by the search and rescue team!"

After hearing about the place of Haili Shawo, Xu Ran couldn't help but feel a shock in his heart.

Xia Tanhe escaped from that place at the beginning, and through Xia Tanhe's description at the time, and based on some of Xu Ran's own judgments, it is very likely that these two places are the directional teleportation points established by the ancient Zhending Mage with the altar situation.

Without thinking much about this, Xu Ran asked: "Sister Mint, since Brother Tan Nian has been rescued from the ancient tomb, then you can take him back to Xia Cheng today to recuperate, and I will arrange it!"

"This probably won't work yet!"

Xia Tanhe said in a low voice: "I applied for this good news call to you on the grounds of reporting safety to my family, and I am afraid that I will have to accept some inquiries after Tan Nian comes out, and cooperate with those scientific expeditions to describe some of the situations and experiences in the ancient tombs!"

"Okay, I won't ask anything else, call me when you're done there, and I'll pick you up!"

"Good!"

After hanging up the phone, Xu Ran turned around and saw Song Wenli and asked, "How is the phone from Mint?"

Xu Ran said: "Sister Mint said that they may not be able to come back, and Brother Tan Nian still has to accept some inquiries from the scientific research team!"

Seeing that Song Wenli nodded silently, Xu Ran said: "Teacher, I have a simple question I want to ask, when you were exploring in the ancient tomb, did you find an underground river?"

Song Wenli looked a little surprised, but nodded and said: "There is indeed an underground dark river discovered, and the underground river is still active and has not dried up, this is the basic common sense of archaeology, what are you asking these meaningless questions?"

After getting Song Wenli's answer, Xu Ran already had a rough inference in his heart, and couldn't help laughing: "I just thought of a feudal superstition problem that can be used to explore in a scientific way that those ancient mages who have the power of science and technology are pretending to be gods and fooling the rulers and the common people!"

This sounded a bit winding, and Song Wenli said, "What does this have to do with whether there is an underground river in the ancient tomb you asked?"