Liu Danqing and Xiao Weiwei quickened their pace, walked into the grove, checked the trees, and found no cheetahs, but a rabbit.

Xiao Weiwei pointed to the treetops and said: "The rabbit will go up to the tree, it's really a magical rabbit, everyone, look, there is a rabbit squatting on the branch of that tree." ”

Liu Danqing glanced at the rabbit and said, "That's the hyrax, the first and third toes of the hind foot have hooves, and the middle toe has claws." The soles of the feet have hairless foot pads with special adhesion, secreted by glands to keep the foot pads moist, and the foot pads are arranged in a high and fovea around the feet, which is a meat socket with suction cup effect, and is good at climbing trees and jumping from tree to tree. ”

"But for now, let's leave it alone, and quickly cut down the branches to frame the shelter, and then go and chop some tall grass and cover it. ”

"Some viewers may think that there may be a thunderstorm for a while, why do we run into the woods?

"In fact, the most susceptible to lightning strikes, the most dangerous is a single big tree in the savanna, because the terrain there is relatively high, it is easy to attract lightning, and our current grove is actually a sunken land, and the trees in this forest are generally not high, so it is relatively safe. ”

"And the grove is not far from the river, and we can see that there is a depression that leads to the river, so there is no water accumulation. ”

The two of them found a piece of ground that they wanted to face higher in this lowland, and simply built a tripod with tree branches, and then cut a lot of tall grass next to the woods and spread it on the shelf.

"Everyone, pay attention!" Liu Danqing explained while laying the grass: "When laying grass, there is a point to pay attention to, that is, it must be spread from the bottom to the top, so that the rainwater will slide down from the roof and will not penetrate into the shelter. ”

"Of course, our roof is much simpler, because it is built in a sheltered part of the woods, so we don't have to bear a lot of wind power, and we just need to press it a little bit with branches after it is laid. ”

set up a shelter and let Xiao Weiwei stay inside to make a fire, while Liu Danqing braved the large raindrops that began to drip and quickly chopped down the branches.

At this time, the sky suddenly brightened, and after a short while, there was a thunderous "boom", as if it was remembered in the ears of the two people.

"The thunderstorm is coming, so I'll go back to the hut to take shelter. ”

Liu Danqing hurriedly rushed back to the hut, squatted at the door of the shelter, and used a mountain knife to cut the cut branches into sections and stack them inside the shelter.

Xiao Weiwei was still rubbing the drill rod hard at this time, and at the junction of the drill rod and the drill plate, there was already a wisp of green smoke gently floating.

"Weiwei, come on, it's about to come out!"

Liu Danqing was chopping branches while cheering for Xiao Weiwei.

After another five minutes, there was a hint of white gas in the green smoke, and Xiao Weiwei knew that there should be some burning debris at this time, so she stopped turning and carefully poured the burning debris into the fire pom-pom made of high-pole grass withered leaf tanning, and shook it.

With the gentleness of coaxing the child, Xiao Weiwei shook the velvet in her hand until a puff of orange-red flames rose.

"Finally there's a fire!" Liu Danqing said while helping to put small branches on the fire: "The weather on this grassland is really changing, and the temperature is also falling as soon as it is said, there are more than 30 degrees at noon, and now I estimate that it is only about ten degrees, and the soaked clothes stick to my body, which makes me feel a chill." ”

"Now my main thing is to bake the fire for a while and dry my clothes, but we don't have much firewood, and when the thunderstorm passes, whether it rains or not, I have to go out and chop some branches and come back. ”

The weather in Africa is so strong, it is more than 30 degrees Celsius when it doesn't rain in November, but when it rains, it often drops below 10 degrees.

Fortunately, the two of them now have a shelter, a fire, and wildebeest meat that is grilled or smoked on top of the fire, and the night is not difficult.

The thunderstorm was followed by more than three hours of moderate rain, followed by a light rain that lasted until the second half of the night.

After the thunderstorm stopped, Liu Danqing rushed into the rain curtain again, and while there was still a little light in the sky, he climbed an acacia tree and cut down a few branches.

The long branches of the acacia tree are good fuel, and as a leguminous plant, the wood contains a certain amount of oil, and even if it rains, it is still dry inside, and when it is roasted by the fire, there is not much smoke when it is burned.

The next day was another sunny day, and the two walked out of the shelter, making an opening remark as usual, and then began to continue their departure.

After more than three hours of advancing southwest, a wide river appeared in front of them.

"Okavango River!" Liu Danqing looked at the river and shouted: "Here, even after the rain, there will only be one river that can be so wide, good phenomenon, we arrived at the Okavango River, and this heavy rain made it thirty or forty meters wide." ”

"You know, this is on the outskirts of the Okavango River Delta, and if it weren't for a heavy rain last night, it would be the same as any other small tributary, not too wide to tell which one it is. ”

"This is exactly what blessings and misfortunes depend on, and now we have become very easy to find human society, as long as we follow this river all the way upstream, we can find human society. ”

"Normally, we would go downstream along the river, and we would normally be able to return to human society, but this is not the case in Africa, where many rivers in Africa flow and flow into the aquifer and continue in the way of underground rivers, and we will get nothing and waste precious time. ”

"In fact, in Africa, the best way to do this is to go upstream, all the way to find the source of the water, so that it is easier to find some African tribes. ”

Xiao Weiwei interjected at this time and asked on behalf of the masses: "For example, now, if we go all the way up the Okavango River, we can return to human society?"

"Yes!" Liu Danqing replied affirmatively, but immediately he added: "But this human civilization has nothing to do with whether it goes upstream or not downstream. ”

“……”

Xiao Weiwei was speechless and looked at him with contempt.

Liu Danqing looked at Xiao Weiwei's eyes and said embarrassedly: "I just want to give you a little knowledge of popular science, let's talk about the key points." ”

"Once we have identified the Okavango River, we can follow it all the way upstream, all the way to where it meets the Tamarakane River. ”

"There's a town there, called Maun, which is the fifth largest town in Botswana and the capital of the North West Territory, with shops, hotels and hostels, an important trading centre and, crucially, a small airport. ”

After a while, Xiao Weiwei asked suspiciously: "Qingqing, didn't you say that you want to walk along the river?

Liu Danqing explained: "We just need to make sure that we are in the position and general direction of the river, and the Okavango River, like most rivers in the world, meanders forward, and we don't need to follow it, because even if we walk a long way, we will encounter more dangerous creatures." ”

Along the river until noon, Liu Danqing and Xiao Weiwei found a small forest and walked in, in this small forest, there is a towering tree, it must be more than 20 meters, as for whether it can reach 30 meters, it is estimated that it is not much worse.

After entering the woods, Liu Danqing put down the things on his body and climbed the big tree to observe the surrounding situation.

"You see, we have a lot of special terrain on the edge of the Okavango River delta in front of us, which looks like a Mediterranean haircut, with yellow grass in the middle and green plants around it. ”

"To put it bluntly, this phenomenon is very simple, it is a small hill, because the terrain is high, so it cannot provide enough water for the trees, and because of the low terrain, there is a circle of trees around the hills. ”

"And then there's the dark green patches, which are not trees, but ponds, or swamps, and the Okavango River delta, also known as the Okavango swamp, has a lot of swamps next to the river. ”

After getting down the tree and having lunch, the two of them took a cool ride under the tree for a while, and when the sunlight was not so strong, they continued to pack their bags and move towards human society.

After walking for a long time, I came to the dark blue area that Liu Danqing had just seen, that is, the swampy area.

"Look, this is the swamp of Africa, each one is full of life, and it is also full of murder, and you see the rotten wood in the swamp that slowly drifts past the deer drinking to the water's edge, it should be a Nile crocodile, let's look at it here for a while. ”

The rotten piece of wood was very patient, and less than three meters away, it floated for about two minutes, and when a fawn walked to the water's edge and lowered its head, it started.

There was a huge sound of water on the ground, and even Liu Danqing and Xiao Weiwei, who were three or four hundred meters away, could hear it clearly.

A large mouth of blood suddenly burst out of the calm water, biting the fawn's neck and dragging it into the water, followed by a violent churn, and a large pool of blood gushed out of the water.

"That's how the law of the jungle is like this, Weiwei, let's go, hurry!"

Walking through hills, around swamps, one day passed.

On the afternoon of the second day after the rain, the two finally discovered the traces of human society, a small "highway", which is described in one sentence: there is no road in this world, and the car becomes a road when you drive more.

Luckily, they stopped a convoy that had just returned from a hunt and took them to Maon.

After spending one night in Maon and tasting the tender wildebeest tenderloin, the two of them flew to Gaborone, transited through Johannesburg, and returned to the magic capital.