Click!

Yuan used a woodcutter made of coarse copper to cut off the branches that stood in front of him, and led the team to continue to walk forward.

Today is the tenth day that Yuan led the exploration team to explore the southern region of the Dragon Tribe, and on the day that Yang led the team to visit the River Tribe, Yuan also led an exploration team of fifty people to begin exploring the southern region of the Dragon Tribe.

Because of the obstruction of a small river, the Dragon Tribe has not explored to the south since the original snake tribe lived, which is also due to Su Yan's negligence.

It took more than an hour to build a pontoon bridge over a small river more than four feet wide, and now the people of the Dragon Tribe can easily travel between the banks of the river through the pontoon bridge.

There is this pontoon bridge does make the dragon tribe a lot more convenient, the dragon tribe opens up the wasteland every year, the jungle and the dragon tribe residence has been quite far apart, the people of the dragon tribe want to chop wood or prepare food for domesticated animals have to walk a long way, and they will have to walk a farther road in the future, now they can go through the pontoon bridge to the other side of the river to cut wood and cut grass.

Yuan led the exploration team to explore the south side of the small river for ten days, and the area within a day's distance to the south was explored several times by the exploration team, and no traces of other primitive tribes were found in the area half a day's journey from the Dragon Tribe, but two tribes were found within half a day to a day's journey.

If they can communicate with the River Tribe, the Dragon Tribe will be able to know that the first tribe discovered by the exploration team is a neighbor with the River Tribe, living across the river, and the fishing teams of the two tribes are fishing by the big river There is a difference of several hundred meters.

After discovering these two tribes, Yuan did not rashly visit these two tribes, and after sketching the locations of the two tribes' settlements on the animal skin map, Yuan led the exploration team to continue the exploration.

Su Yan arranged two tasks for Yuan, one was to explore the southern region of the Dragon Tribe, and sketch out the primitive tribes, water sources, mountains and other things encountered on the animal skin map, and the other was to explore farther south in a straight line.

The former task was very easy to understand, and he could complete it in a lot of time with the exploration team, but the latter task made Yuan scratch his head, and he didn't know why Wang gave him such a task.

Although he had doubts in his heart, he didn't ask, the king let him do this because he had the king's reason, and if he didn't understand it now, he would understand it later.

Yuan was right, the task that Su Yan assigned to him had Su Yan's thoughts, and this task was actually to confirm a guess in Su Yan's heart.

There is a sun and a moon in the sky, but Su Yan can't be sure whether this is the earth or the other world, after all, this kind of unscientific thing has appeared, and it is not a problem to have another other world with a similar environment to the earth.

Of course, for Su Yan, it doesn't matter if it's the earth or the other world, it's more important to live well.

According to the analysis of the climate and the position of the sun, Su Yan knew that the area where the dragon tribe was located was located in the northern hemisphere of the planet, with four distinct seasons, and the climate would be warmer and warmer from the dragon tribe to the south, and it might not snow in the farther southern region in winter, and even the climate would be warmer.

That's where the problem becomes.

The total population of the Dragon Tribe is close to three thousand five hundred, and in this area where the Dragon Tribe is located, the Dragon Tribe is the most powerful tribe, and the total population of other primitive tribes is more than five hundred, which is far from being comparable to the Dragon Tribe.

There are no primitive tribes that can fight against the dragon tribe in this area, but it is very likely that there will be primitive tribes that are strong enough to fight the dragon tribe in the warmer areas of the south, and there will even be primitive tribes that are even more powerful than the dragon tribe.

The area inhabited by the dragon tribe is very bad, winter, cold winter, in the cold winter the dragon tribe can not do much work, in the cold winter time is wasted in this way, nearly a quarter of the time is wasted, and in the warm area of the south, the tribe living there can endure the winter that is not cold and continue to work.

It's not just a matter of labor, in winter, the snow covers the earth, food is extremely scarce, the primitive tribes living in the north can only take advantage of the autumn and the beginning of winter to collect food on a large scale, often before the end of winter, many primitive tribes are consumed food, they have to brave the cold and danger to go out hunting.

And in the warmer climates of the south, there is no need to worry too much about this problem.

There is no need to doubt that in a place with a warm climate, it is easier for powerful tribes to appear.

The northern side is dominated by medium-sized tribes with a population of 50 to 200, and there are not many large tribes with a population of more than 200, and there are few small tribes with a population of less than 50.

In the warmer climate of the south, they can obtain more food than in the north, and it is more likely that large tribes of more than 200 people will appear there, maybe the tribes of more than 200 people are only small tribes in the south, there may be powerful tribes of thousands or even 10,000 people, and they may have been trying to grow crops, domesticate wild beasts, fire pottery, smelt blister copper, and weave linen......

These are all Su Yan's guesses, and there is a small possibility that these situations will really occur, but Su Yan's expedition to the south is not to confirm these speculations, but to find a wider river, a river that is much wider than the river next to the Dragon Tribe, in front of this very likely big river, the river next to the Dragon Tribe can only be regarded as a small river, and this small river is just a tributary of that big river.

Four ancient civilizations, ancient Egypt, ancient Babylon, ancient India, and China.

The birthplace of ancient Egyptian civilization is the Nile River Basin, the birthplace of ancient Babylonian civilization is the Euphrates River and Tigris River basin, the birthplace of ancient Indian civilization is the Ganges River Basin, and the birthplace of China is the Yellow River Basin.

Starting from the Snake Tribe, other primitive tribes can be found in the area around the Snake Tribe within half a day's journey, which is undoubtedly a bit dense in the primitive era, but it can also be explained.

The primitive tribes live close to the water source, the primitive tribes are relatively dense, indicating that this area is rich in water sources, and the most abundant water source area is a large river hundreds of zhang wide across the north and south or east and west, this big river divides into a number of tributaries, these tributaries are divided into countless small tributaries, and countless primitive tribes are distributed in the "mother river" basin.

The small river can't carry the dragon tribe, the dragon tribe moves to the big river, the big river can't carry the dragon tribe, and the dragon tribe may have to develop to the location of the bigger river.

Su Yan arranged for Yuan to explore to the south, it is better to find the big river quickly, it doesn't matter if you find it later, the bigger river will definitely appear, and the big river can carry the growing dragon tribe.