Same as going to the old mountain to open up the wasteland, at this time there are few snakes, insects, rats and ants in the mountain, you can rest assured and bold to clean up the thatch and shrubs on the mountain, Tao Pu coordinates everyone to work, from the bottom to the top side by side in a row, so as to ensure safety to the greatest extent.

Zhao Yuan took Luoluo towards the cave on the mountainside, ready to check the ice and snow stored in the cave, the entrance of the cave has not been sealed, the weather has begun to warm up, so many days have passed, I don't know if it has melted.

"Uncle, why does the ice and snow melt, is it because the sun is shining?" On the way up the mountain, Luoluo asked.

"Because whether it is ice, snow, or water, it is essentially water, and when the temperature is below freezing, the water will freeze, and as for snow, it will become a cloud because the water has become gaseous and floats to the sky, and in winter, because the temperature is low, it falls and becomes snow." Zhao Yuan explained.

"Uncle, I don't understand." Luoluo said a little sadly.

"Yes, I haven't told you about this yet, so let's start tomorrow, I'll teach you two more courses, physics and chemistry, but Luoluo, you're still young, I'll only give you some common sense in life, okay?" Zhao Yuan smiled and squeezed Luoluo's little hand.

"Physics and chemistry, can you learn why snow melts?"

"Of course, you will find out how interesting the world we live in."

Luoluo listened in a daze, after all, he was a child who was less than four years old, although he was very smart, he read more books than those eight or nine-year-old children who went to school.

"Uncle, did you say that the snake is still in the cave?" Luoluo asked again.

"It should still be there, remember what I told you last time, snakes and other animals have to hibernate, one of the reasons is because of the low temperature, there is ice and snow hidden in the cave, the temperature has always been relatively low, and the cauliflower snake should not have woken up yet." Zhao Yuan said with a smile.

"Will it starve to death if it sleeps for a long time? It's been so long. ”

"No, we have a saying here, on the third day of March, the snake goes up the mountain, which means that the snake usually hibernates until March, and now it is only the first month, and this hibernating snake will not starve to death."

"March 3, the snake up the mountain?"

"In fact, this is just an approximate time summarized by the predecessors, as long as the temperature is suitable, the hibernating snake will wake up, not necessarily March 3."

"Here we are, uncle, but we don't have torches with us?"

"It's okay, let's just make a torch now." Zhao Yuan said with a smile.

"You didn't bring flint and steel, did you? Are we going to go home and get the flint? ”

"No, Uncle has a way." Zhao Yuan smiled mysteriously, he has seen a lot of wilderness survival programs in later generations, but he has not personally experienced a fire without flint in the wild, using methods such as drilling wood to make fire.

Zhao Yuan found a few dried edelweiss plants from the forest, took off the leaves and crumpled them, and used them as velvet for drilling wood to make fire. Edelweiss is also known as edelweiss, thin snow grass, etc., mainly grows in the south of our country, after the stems and leaves are dried up, because the fine fiber contained in it is very rich, a little rubbing, you can get a small ball of very good ignition material.

"It's called edelweiss, and it's a great firestarter." Zhao Yuan introduced Luoluo on the side.

"I'm going to teach you a method called drilling wood for fire."

"Uncle, what is drilling wood for fire?"

"This involves a myth and legend from ancient times, do you want to listen to Luoluo?" Zhao Yuan looked for the rootstock and said to Luoluo.

"I like to listen to stories the most, uncle, tell me about it."

"Legend has it that more than 10,000 years ago, there was a tribe called Suiming Kingdom, the people of this tribe did not know the time of day, did not know day and night, and what is more amazing was that the people of this tribe would not die, and when they were tired of staying in the world, these people would ascend to heaven............" Zhao Yuan told Luoluo the story of the Suiren clan drilling wood for fire, while operating according to the method of drilling wood for fire seen in some survival programs in later generations.

"Uncle, isn't it okay, your hands are red." When Zhao Yuan finished telling the story, Luo Luo saw that Zhao Yuan had not succeeded in lighting the fire.

"It seems like it's going to be hard, but I feel like I'm almost done." Zhao Yuan kept rubbing his hands, enduring the discomfort of his two palms and said.

"It seems that there is smoke, is it almost successful?" Luoluo squatted on the side, watching Zhao Yuan operate.

"You can't stop at this time, do you remember the sentence I gave you, those who travel thousands of miles are half ninety?"

"Remember, this means that the closer you are to success, the more serious you have to be about it, or you may fall short." Luoluo nodded and said.

"Okay, that should do." Zhao Yuan looked at the obvious sparks on the edelweiss grass under the rootstock and said happily.

The weather has been sunny these days, and the edelweiss grass has been very dry, and Zhao Yuan has successfully lit the fire at one time. Carefully place the smoking edelweiss on top of a handful of flammable dry weeds and gently blow the fire alight.

"There is a principle used in drilling wood to make fire, that is, friction generates heat, and when I teach you two courses in physical chemistry, you will be able to understand the principle of Luoluo."

"It's amazing, uncle, so that you can make a fire." Luoluo said in surprise.

"It's magical, but you can't play with fire. Okay, now we can make a torch. On the platform in front of the cave, Zhao Yuan added some dead branches to the fire, and then took Luoluo and began to make torches.

"I know, don't worry, uncle, I don't know how to play with fire, how to make a torch?"

"Just use this, see if there is, some pine trees will have pine oil at their roots, we pick up some pine needles, put pine oil in the bread, and we can make a torch that can burn for a while."

"In the past, at that house in Zhaojiazhuang, I went to the mountains with my uncle to collect firewood, and I brought pine oil home." Luoluo nodded and said.

"Uncle forgot, Luoluo, do you remember?"

"Remember, that pine oil was ugly, I thought it was some kind of animal droppings." Luoluo said with a smile.

"Alright, light the torch and we can go into the cave and have a look."

"Okay, uncle, let's go in and have a look."

Zhao Yuan lit the made torch, then held the torch in one hand and led Luoluo towards the cave in the other. As soon as he walked into the cave, Zhao Yuan felt that the temperature in the cave was much lower than outside, and it seemed that the ice and snow were still there.

"Uncle, let's see if the snake is there." In the cave, Luoluo looked around by the light of the fire.

"Okay, I moved it outside, let's see." Zhao Yuan shone the torch to the place where the snake was placed, the cauliflower snake was still there, but it seemed to have changed, Zhao Yuan remembered that it was originally that the snake was coiled under the pine needles, but now the snake's body is not completely coiled as it was at the beginning.

"It's motionless, is it really hibernating, won't it die?" Luoluo asked.

"In this way, we will take this snake out in a while, let it bask in the sun, it will be warm, and if it is still alive, it should wake up." Zhao Yuan was also a little uncertain and said.

"Okay, uncle, let's see if the ice melts and then go out, it's dark here." Luoluo looked at the darkness inside the cave and was a little scared.

"Okay, let's take a look and get out." Zhao Yuan said with a smile.

Coming to the cave, Zhao Yuan looked at the soil buried with ice and snow and did not sink, touched the covered soil a little damp, it seems that some of the ice and snow have melted, I don't know if it can be stored in summer, it seems that the cave will be sealed as soon as possible.

"Alright, let's get out." Zhao Yuan led Luoluo towards the outside of the cave, passed by the place where the cauliflower snake was placed, and took the snake out of the cave by the way.

"Boss Zhao, is this going to add food?" Wen Jianglang saw Zhao Yuan holding a snake and taking Luoluo down the mountain.

"Grandpa Lizheng, we don't eat snakes, we just want to wake up this snake." Luoluo shook her head and said.

"It's a pity, the cauliflower snake is very delicious." Wen Jianglang said with a smile.

"Uncle, let's go back."

"Okay, let's go back, Uncle Lizheng, I'll bring you some tea in a while, everyone has worked hard."

"It's not hard, it's not hard, thank you Boss Zhao."