Jin Rijie and the rest of the team had heard a lot about it and were not interested in it anymore, but Han Sen was very interested.
The three generations of Professor Sun had done a lot of research on the plants in First God's Sanctuary. The main topic was whether the plants in First God's Sanctuary could be used as medicine.
Although many scientific research methods could not be used due to the limitations of technology, Professor Sun's family had made a lot of achievements in this field.
Their main research methods were mostly to observe the reactions of creatures when they ate the plants. After taking the plants, they fed the creatures all kinds of experiments to determine the medicinal properties of the plants.
Of course, creatures were different from humans. Without human experience, Professor Sun's research could only be called research, not a result.
However, Professor Sun did tell Han Sen some of the research that had been effective. For example, Professor Sun's grandfather had made an ointment with the plants in God's Sanctuary, which was very effective for external injuries.
There were many similar results, but because most of them were only tested on a small scale, they could not be popularized.
The main reason was that the herbs made by Professor Sun were not much better than the medicine made by the Alliance. In addition, it was hard to tell whether there were any side effects, so it was difficult to popularize.
On the way, Han Sen and Professor Sun had a lot to talk about. Han Sen mainly wanted to know some common knowledge, which might be useful in God's Sanctuary in the future.
In addition, he was also curious about the plants that the turtle ate and wanted to know what they were used for.
Unfortunately, although Professor Sun had been studying for decades, he was just at the beginning of God's Sanctuary. There were many things that even he did not know.
Han Sen described the red fruit tree to Professor Sun. Professor Sun had no idea what it was, so he didn't know what it was either.
However, after hearing Han Sen's story of the turtle eating plants in Copper Mountains, Professor Sun said to Han Sen, "I have studied for decades and found that many creatures eat plants, but most of them do not need to eat plants. According to my observation, the creatures that eat plants are not like us to maintain their lives."
"Then what do they want to do by eating plants?" Han Sen could not help asking.
"I've been thinking about this for a long time. In the end, I came to the conclusion that those plants might be helpful for their reproduction," Professor Sun said after some hesitation.
Jin Rijie and the others obviously didn't believe Professor Sun's statement. They had never heard that people needed to eat plants to give birth. Plants were not Viagra. How could eating them make people feel better?
Han Sen remembered when he first met the Golden Howler. Although the Golden Howler did not eat plants, it ate many creatures and gave birth to a baby Golden Howler.
Han Sen wondered if creatures didn't just eat plants. But what if the creatures that needed to eat also gave birth to their own offspring?
If that was the case, Han Sen felt that his chance had come. Perhaps the old tortoise ate to give birth to offspring.
If the old tortoise was like the Golden Howler, it would spit out its life essence to feed its offspring. In that case, Han Sen would have a chance to take the life essence back.
Now, Overload was just a beginner, which was far from Han Sen's expectations. Han Sen was afraid that the old tortoise might return to the sea at any time. If he could take the life essence when it gave birth to its offspring, that would be the best.
"Han Sen, is the old tortoise still in the Copper Mountains?"
Han Sen was thinking about how to ask Professor Sun to take a look at the old tortoise, when Professor Sun proposed it himself.
"I think so. I didn't hear that the old tortoise came out of the Copper Mountains," Han Sen quickly said.
"Well, let's go to the Copper Mountains to see the old tortoise. Maybe it will be helpful for my research," Professor Sun decided on the next itinerary.
Jin Rijie and the rest did not have much reaction. They did not participate in the battle against the old tortoise, but they had heard about the situation of the old tortoise.
There were many creatures in Copper Mountains, but none of them were too strong, so it was not too dangerous. In their opinion, the turtle was not fast, so it would not be too dangerous.
Only Han Sen knew that the old tortoise was actually very fast.
However, Han Sen did not say much. It should not be a problem to take a look from a distance. In addition, Han Sen also wanted Professor Sun to see if the old tortoise was really going to give birth. Professor Sun was the authority in this field.
The group set off for the Copper Mountains. Professor Sun was not weak, and with his sacred-blood mount, it was quite fast. With the three members of Glory leading the way, there was not much risk.
Han Sen had nothing to do, so he just chatted with Professor Sun.
Professor Sun was an easy-going person.
In addition, he had been studying in First God's Sanctuary for so many years.
However, other people had left First God's Sanctuary one after another.
Basically, Professor Sun could only get in touch with young people.
Not many young people were willing to talk to him about these things.
Han Sen was interested in this field, and Professor Sun also talked a lot. He studied these things out of interest and to benefit mankind, so there was nothing to hide. He taught Han Sen a lot of practical knowledge.
For example, how to tell which plants were edible and which had strong side effects. Han Sen memorized all the knowledge, which might save his life in the future.
After being taken away by the Golden Howler last time, Han Sen knew that once he left God's Sanctuary, it was not easy for a human to survive in the wild.
After a few days in the Copper Mountains, they finally found the old tortoise. It was gnawing on a dark brown withered vine in front of a cliff.
"Professor Sun, let's just take a look here. It might be dangerous if we go any closer." Han Sen stopped Professor Sun, who wanted to go further.
Professor Sun frowned and said, "It's too far from here. I can't see anything clearly. Can we go closer?"
"Let's use binoculars first. It is indeed too dangerous to go any closer," Han Sen advised again.
"What can you see from so far away? Don't worry, Professor Sun. We will protect you. No matter how close you are, you will be fine," Lu Mingda said with a big hammer on his back. He looked at Han Sen with dissatisfaction.