At the same time, Zhang Jun planned to transform the two flying dragon flying brigades, about 300 flying dragons, into a logistics supply brigade, whose task was to provide supplies to the seven dragon villages, transport strategic materials between the dragon villages, and replenish the wartime material needs in a timely manner.

This logistics supply brigade is also responsible for finding more strategic resources from outside Longzhai, including stones, trees, animal bones and other materials, so that in wartime, more strategic resources can be collected from the outside world in time to supplement wartime needs.

As a result, Zhang Jun's team has begun to have the system of the army, the classification is relatively perfect, and the various branches of the military are relatively complete, and then he will use the flying advantage of the flying dragon to form a special force, so that the special forces can imitate the special forces in the previous life, and have the ability to sabotage the enemy's head organization, assassination, poisoning, spreading rumors, creating chaos, psychological intimidation, and destroying the enemy's strategic bases.

With a complete set of arms, advanced training, and strategic and tactical thinking, although the dinosaur clan is inferior in numbers, it has very sophisticated troops and advanced combat thinking, so it will definitely make great achievements in future wars.

Since the Black Tiger entered the Nile, a year has gradually passed, and the Black Tiger is still detained in the prison, and he is sometimes escorted outside to let off steam, and when he sees the advanced facilities such as the dragon village, prison, and farm of the dinosaur clan, he has already been very shocked.

During the period when the Sword Tiger tribe still lived in caves and thatched huts, the dinosaur tribe had already lived in solid houses and walls, and already had a certain social structure, with civilized institutions such as police and judicial and financial management, as well as advanced things such as breeding farms, which made the Black Tiger lose convincingly.

The black tiger thought to himself, if he can escape one day, he must bring what he has seen and heard to the Sword Tiger Tribe, if the Sword Tiger tribe can learn the dragon village and farm construction of the dinosaur tribe, then the food problem of the Sword Tiger tribe can also be solved in the future, and the ability to defend against the attacks of other tribes will be greatly enhanced.

The Black Tiger can also occasionally hear and see the training methods of the dinosaur soldiers, and is shocked by their professional training methods, he has never seen a race, gathering all the people together, conducting various military trainings in different categories, and holding large competitions and military exercises, which is much stronger and much higher than the soldiers of the Sword Tiger Tribe, who only rely on hunting to exercise their physical fitness.

Black Tiger also saw that some dinosaurs used some unique fighting techniques and used some martial arts moves, which made him feel even more surprised, he felt that the dinosaur clan was a mysterious and unpredictable alien, as if they were from the heavenly dome, not a race on earth, their thinking has far surpassed other races, and the black tiger even had a trace of worship for the dinosaur clan in his heart.

Regardless of whether the black tiger can escape or not, other races will sooner or later come into contact with the dinosaur civilization, and the achievements of the dinosaur civilization will definitely spread to the whole world.

What was originally completed in 10,000 years, under the guidance of Zhang Jun's heterogeneous advanced thinking, may only take 1,000 years to complete, so although the current 10,000 years of prehistory was changed by Zhang Jun to 0 AD, but by 2013 AD, at that moment, the level of science and technology on the earth is estimated to only surpass the level of Zhang Jun's previous life, and to a large extent, it will not be further behind than then, and all this happened about 10,000 years earlier than the previous life.

Therefore, the development of the technical level closely related to scientific and technological progress has been mentioned by Zhang Jun on the journey, for a hundred years, he has also been looking for suitable mineral resources in Africa, but due to the backward level, he can only find iron ore that he can identify, although Zhang Jun has studied in college, but has not studied minerals, and many other ores Zhang Jun can not identify.

And although Zhang Jun knows the existence of mineral resources such as copper, gold, silver, manganese, arsenic, and rare earths, which are all elements in the periodic table, he does not know where they are distributed, nor does he know how to mine and smelt, so his descendants will not understand these production technologies.

What Zhang Jun can do is to guide the dinosaur clan to find these resources that can be used, especially iron ore, copper ore, aluminum ore and other resources that can make cold weapons and hot weapons, and use them to build weapons.

Zhang Jun had already discovered an iron mine in the western part of Egypt, but he didn't know how to mine and refine it, so he had been sending people to study this technology.

In the previous life, the history of human smelting actually went through a long process, from ordinary pieces of iron, to cast iron, and then to better steel, during which it took about 2,000 years, so the time span of technological progress is very long.

Even in ancient China, it only took about 100 years from the period of block iron to smelting cast iron, which is already the fastest speed in the world, indicating that scientific and technological progress is a slow process.

Therefore, Zhang Jun wants to refine a piece of iron, cast iron, and steel, and he doesn't know how long it will take, he only has advanced ideas, but no advanced technology as a guide, so he also has to lead the dinosaur clan through a long historical process of exploration and creation.

It's just that in this process, Zhang Jun knows the original direction of technological progress, and he can play a good guiding role, so that the dinosaur clan can strengthen its strength, cultivate more technical talents, and research more advanced technical products.

It took two thousand years for human beings to smelt steel, and Zhang Jun's plan for himself was to complete this task in two hundred years, but he had no bottom in his heart, because technological progress is a complex process, and it is not enough to have a beautiful vision, but also to see the wisdom of the dinosaur family, whether it can solve a series of technical problems, which is unknown, Zhang Jun can only expect that he can play a greater role.

If the steel refining progresses, then the dinosaurs will get rid of the era of using primitive weapons and enter the age of using powerful iron tools, and further they can also create a mechanical civilization under the guidance of Zhang Jun, and simple machinery can be developed slowly, so as to enter the era of mechanical revolution, manufacture guns and other advanced scientific and technological products, and end the era of cold weapons as soon as possible and enter the era of hot weapons.

These are already in Zhang Jun's plan, so he needs to invest more energy in smelting next, so that the dinosaur clan can refine the iron as soon as possible, and when the time comes, the dinosaurs holding steel spears will definitely be much stronger than other barbarian creatures, no matter how many of them are, they will not be able to resist the powerful force of the dinosaur clan.

The collection and smelting of iron ore is in full swing, all the work is going on, Zhang Jun has gradually ushered in a new era, he will end the primitive society era ahead of schedule, into the advanced era of cold weapons, he has been looking forward to the change, looking forward to the change as soon as possible.