Although the old professor mainly studies history, he still has some research in geology.

The other five people followed him along the way, passed through a dozen small hills and saw a small river running around the hills. The water in the river was very clear, so they resisted the urge to play in the water and continued on their way.

"Look, what are these things? They're so cute." Pang Xu picked up two small balls from the ground and held them up for everyone to see.

These two things that are only about the size of ping pong balls look like potatoes, but they are much smaller than potatoes.

The old professor looked carefully, and then checked with his optical brain, but found that he didn't recognize him, so he shook his head regretfully.

Jian Ning's eyes lit up when he saw the thing in Pang Xu's hand. He walked to the place where Pang Xu had just bent over, pushed aside the grass, pointed to one of the plants with small vines and said to everyone: "This is the plant. Yes, although I don’t know its scientific name, it was also a kind of sweet potato in the ancient earth period. Don’t look at its appearance, but after peeling off the outer skin, the meat inside is sweet and sour, very delicious. It is similar to potatoes and Sweet potatoes also grow underground, so you can try them.”

As he spoke, he dug out several small balls from under the small vine, wiped them casually, took out the miniature healing device that Ming Yang had brought him, and scanned it.

"Drip... non-toxic, edible."

Hearing the prompt tone, several other people quickly took the small ball from Jian Ning's hand, and gently peeled off the dirt-covered skin, which turned out to be moist lavender inside.

One bite is refreshing and delicious, the taste is really as sweet and sour as Jian Ning described it. If you look closely, there are small seeds inside the sweet potatoes, which taste like figs, which is very interesting.

"It tastes great. By the way, Ning, how did you know?" Jessica licked her lips. She had already eaten three and was about to eat the fourth.

Jian Ning smiled mysteriously, "I read it in the book."

The old professor nodded in satisfaction, and his impression of Jian Ning soared several degrees, "This is very good. Young people should read more books. If there is a chance, you can recommend the books you read to me. I want to read them too."

He only judged it based on the memories of his previous life. How could he know which book on the interstellar world contains such knowledge, so he agreed vaguely.

"By the way, the program team didn't prepare nutrient solution and lunch for us, so don't we have to prepare it ourselves later?" Hao Shuang, who also ate a lot of sweet potatoes, finally realized.

At this time, Su Zhan and Jessica had already packed a lot of sweet potatoes into their small backpacks. Although they didn't know if there was any delicious food ahead, it was better to prepare just in case.

They didn't pack too much, the six of them only prepared for three, because after all, this is a tourist star developed by Xu's family, and they should not be too greedy in adhering to the principle of sustainable development. It's useless.

They had walked for nearly an hour, and the young people were fine, but the old professor and little Pang Xu couldn't keep up physically, so everyone decided to take a rest first.

"Brother Ningning, why are there these terraced fields since there are few people here?" Children always like to hit the nail on the head.

"Hahahaha..." Hao Shuang laughed out loud first, "Don't care about these details, just treat them as wild for now."

The speaker had no intention of listening, the old professor frowned, as if thinking about something, Su Zhan had already stood up and kept looking around.

Jian Ning went to the terraced fields and carefully inspected the crops, but found nothing abnormal.

Su Zhan, who had watched around over there, came back and said, "Why don't we send two people to look around first. It would be great if there are residents, and we can prepare in advance if there is any trap."

Everyone agreed, and finally Jian Ning and Pang Xu were sent out to observe the situation, while Su Zhan and Hao Shuang stayed to protect Professor An Peng and Jessica.

Holding Pang Xu's hand along the way, Jian Ning carefully observed the traces on the ground, and Pang Xu also followed for a long time but found nothing.

He asked curiously: "Brother, what are you looking at? Isn't there a relatively ordinary dirt road under our feet?"

Knowing that this child is precocious, Jian Ning didn't want to hide it from him. She thought that she promised Mr. Pang to teach this child some things, but before he was very busy, there were always delays. Today is just a chance.

So he said very seriously: "Xiao Xu, what brother said now is very important, look carefully, is there a dirt road under our feet?"

Pang Xu nodded. Didn't he just say that?

Jian Ning: "Then see for yourself what is the difference between this dirt road and the surrounding area?"

Pang Xu: "Difference?" He was puzzled. There was no difference. There were weeds in some places around, and this was just an ordinary dirt road. Besides, there was too much dirt on the dirt road to see if there were any footprints.

Jian Ning: "Xiao Xu, don't just look at things on the surface in the future, but also analyze the surrounding environment."

He pointed to the place under his feet and said: "Look, the dirt road under our feet is flat. Are you looking at the grass next to it? Is it growing sparsely? Then look to the side to see if the grass on the ground is farther away from the dirt road. grow thicker?"

Pang Xu: "Really, what does this mean?" He didn't quite understand the relationship between the growth of weeds and human footprints.

Jian Ning touched his head and said: "There is a saying in the ancient earth that there is no road in the world. If you walk too much, it becomes a road. Look at the small dirt road under our feet. Although we can't see the complete footprints clearly, But what is certain is that there are definitely people who often walk here, and the original weeds here are trampled to death."

Little Pang Xu opened his mouth, and suddenly felt that what his brother said made sense. He carefully looked at the dirt road under his feet. Strictly speaking, it cannot be said that there are no footprints, but it is not obvious because the footsteps are too tight. That's it, some footprints can still be vaguely seen in places where the weeds grow sparsely.

"Wow, amazing, Brother Ning Ning, you are amazing." The little eyes were full of admiration.

"Okay, let's go to the front to investigate quickly and don't make other people wait in a hurry. You still have a lot to learn in the future. You know that there is no end to learning?"

"Ok!"

The two carefully observed the surroundings hand in hand. Along the way, Jian Ning gave Pang Xu a lot of useful common sense. After walking for nearly 10 minutes, a small bamboo building appeared in front of them.

There is a stream not far from the left of the small bamboo building, and the small bamboo forest they have been looking for is on the right.

"Brother, look!" Pang Xu jumped up excitedly, but in order not to expose his target, his voice was very low, probably only Jian Ning who was standing beside him could hear it.

Jian Ning looked around and found that there was no danger, "I'll go over and have a look first, you wait for me here for a while, if there is no problem, I will make a fist at you, and you come directly, if I wave at you, you will Leave immediately, go back the same way to find Brother Hao Shuang and the others for help, do you know?"

"it is good."

After the two discussed, Pang Xu squatted on the side of the road, and Jian Ning walked towards the small bamboo building.

First, he carefully observed the surroundings, and found that there were indeed traces of human activities. Jian Ning went up to knock on the door, but no one answered for a long time.

After knocking like this for about 2 minutes, an old woman's voice faintly came from inside, "Who is it? Chunzi, the door is unlocked and come in."

With a creak, Jian Ning pushed open the door and stepped over the high threshold. As soon as he entered the door, there was a stove made of mud. It was obviously unreasonable to build the stove in a bamboo building, but it seemed that it had not been used for a long time. There was a thick layer of dust on the edge of the platform.

Walking through the stove to the first private room, Jian Ning found an old woman lying on the bed.

After questioning, he found out that the old lady's family had gone shopping in the "town", which was about two days away from here, so her family would not be able to return until tomorrow at the earliest.

She is currently living here alone, and she is not feeling well today, and she hasn't eaten yet.

After understanding the current situation, Jian Ning walked out of the bamboo building and brought little Pang Xu back to find other people.

After everyone met smoothly, Jian Ning reported to everyone what the two of them had just seen.

"About 10 minutes away from here is a bamboo building. Next to the bamboo building is the bamboo forest we are looking for. There is an old woman living in that bamboo building. Her family is not here for the time being, but she is currently in illness. Since she is physically inconvenient to move around, our current task is to help her with housework and prepare meals, so that we can go to the bamboo forest of her home to investigate."

"Okay, let's do it!"

Now that the target person has appeared, this grandma should be the NPC of this optical card. Now they only need to meet grandma's requirements to find clues to the flute first, and maybe there will be clues to other musical instruments when they get there.

Anyway, some progress has been made.

Everyone took good things and came to the small bamboo building where the old lady lived. The environment here is really good. In fact, it is difficult for them to see such a scene because they often live in the city. It is very comfortable to be in such close contact with nature. .

Several people secretly decided in their hearts that they must travel here again when they are free next time.

"Grandma, drink slowly, this glass of water is still a bit hot."

After the division of labor between the six people, little Pang Xu accompanied the old lady to serve tea and water and chat with her. The old professor and Jessica were responsible for some simple housework, and the remaining three young men knew how to carry water and cut things obediently. Chai made lunch.

"Let's eat bamboo tube rice for lunch today."

Jian Ning's words made the other people full of energy.

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