With the continuous attack of the various banks and consortium expeditions of the Ming Dynasty, the territory of the Ming Dynasty is also expanding rapidly, and there are more and more Ming fleets on the sea, in addition to the need to avoid bad weather, it is relatively smooth. The river transport in the interior is also carried out vigorously, the Yangtze River, the most important golden river in the Ming Dynasty, has been filled with a large number of ships, the dangerous shoals and reefs in the Three Gorges have been blasted by Zhu Youxiao's army, relative to the amount of water in later generations, the current Yangtze River has no too obvious dry period at all, the amount of water is very abundant, after removing these obstacles, the merchant ships from Wuchang to Chongqing can run easily, and there is the use of hydrogen balloons between the north and south, which is much faster than before, but not complete. The management of the Yellow River is still in its infancy, but the sectional shipping is more troublesome, mainly because the amount of work is too large, and the area involved in the flood storage area is too large.

The most difficult thing for Zhu Youxiao is that the current work efficiency is too low, especially the efficiency of engineering vehicles, in this era there are not too many ways, if this problem is not solved, it also affects another major event, with the expansion of the local area, the land transportation seriously restricts the circulation of goods, not only the speed is too slow, and the batch of transportation is also very small. Zhu Youxiao's idea is to build a railway, but the huge earthwork is a huge waste to rely on manpower alone, so construction machinery has become a bottleneck that Zhu Youxiao must give priority to solving.

Zhu Youxiao handed over this problem to Bo Jue to solve, because the genius Bo Jue solved too many problems, but because he solved too many problems, many things entangled his hands and feet, so that he had no time to continue to transform the transformation of the pot camel machine. Now Zhu Youxiao directly ordered him to continue to transform the pot camel machine, so that the practical function of the pot camel machine is more powerful and adapts to more harsh environments, especially road problems, which is a fatal problem.

Genius is the accumulation of experience plus a little inspiration, Zhu Ling's steam engine transformation has reached his limit level, with the continuous expansion of the application of rubber grass, heavier closure, lubrication system has been done perfectly, the experimental steam locomotive has been manufactured, according to Zhu Youxiao's guidance, the railway has built a circle-shaped closed track, now the steam locomotive has been on it can run safely, simple technical problems can basically be solved, the only difficulty is to build a railway, How to get rid of the huge earthworks became a bottleneck.

After Bo Jue received Zhu Youxiao's order, he came here, first watched the test of the train running on the track, and then thought of transforming the function of the pot camel machine. The genius Bo Jue got a little inspiration from the train driving on the track, whether the pot camel machine can travel on the track, but if you want to build a track for the pot camel machine, then its range of activity is a problem. Bo Jue sat on the train boredly thinking of a solution, walking back and forth on the train for a while, and then lying on the floor to watch the tracks. Eh, he suddenly seemed to think of something, but the inspiration was like running away in an instant, and then he continued to look on his stomach, and finally understood, he saw that the train was stationary, and the rails kept retreating, right, if the rails could move, then? No, it's still a no-brainer, but I always feel like it has something to do with it.

After getting off the train, Bo Jue walked around in the Huangzhuang, he always felt that he had some ideas, but he just couldn't think of it, and unconsciously walked to the waterwheel that watered the ground, walking a little tired, and a little thirsty, Bo Jue lay in the ditch next to the waterwheel and drank a breath of clear well water, raised his eyes to see this modified waterwheel, has used a rubber mat closed chain, much better than the previous water output, can be poured several acres of land in a day, looking at Bo Jue found a problem, Isn't this chain a deformation of the rails? If the chain is made flat and widened, it will not be a railroad track, and if such a chain is bypassed to the wheel of the camel machine, the problem of the road environment will be solved soon? So Bo Jue quickly returned to the laboratory and told his assistants his idea, asking them to immediately make such a chain rail according to their own ideas and solve the transmission problem by themselves.

When Bo Jue's first pot camel machine around the chain was manufactured, Zhu Youxiao found that his brain was not enough, the chain rail tractor is the most common construction machinery in later generations, which can adapt to many complex working environments, and because the contact area with the ground is very large, whether it is a bulldozer or an excavator, etc., it is a chain rail tractor, how can I forget this kind of thing. Bo Jue's chain rail pot camel machine is still very simple, and it may not be able to be used directly, but this is something very close to the goal, so Zhu Youxiao also took out a few thousand taels of silver to continue to support Bo Jue to continue to transform, so that this chain rail pot camel machine slowly becomes a widely used machine.

Since entering the apocalypse seven years ago, Zhu Youxiao has been very cautious, especially very careful about whether his activities are dangerous, Zhu Youzhen was also called back by him from the distant Zhu Fort, he can't judge whether he will die in an accident like Zhu Youxiao in history, but he must be prepared to a certain extent, Zhu Youzhen is now seventeen years old, and the difference in history is that he is no longer the stubborn Zhu Youzhen, after several years of tempering, he has been reborn and changed to bones, Whether it is military or civilian, he has a certain ability to deal with it. Zhu Ciran's age is too young, he can't bear the burden of the Ming Dynasty, in order to let the Ming have a stable development environment, if he has an accident, he must let Zhu Youzhen legally inherit the throne, and he can't leave any stain on him, that is, he must let the courtiers know that Zhu Youzhen is also the legal heir of the Ming Dynasty.

Zhu Youxiao included Zhu Youzhen in the cabinet and asked him to deal with many normal things instead of him, which made many ministers puzzled, that is, Zhu Youzhen himself did not understand what Zhu Youxiao meant, and Zhu Youxiao was not easy to explain, so he couldn't say that he might die in August this year. In addition to arranging for Zhu Youzhen to start his internship for the position of emperor, Zhu Youxiao also had a conversation with Zhu Youzhen, and also told him that in case of an accident on his own, he must take on the responsibility of continuing to build the Ming Dynasty, which made Zhu Youzhen also worried. After August, Zhu Youxiao still wrote a testament and handed it over to Empress Zhang for safekeeping, which meant that in case of an accident, Zhu Youzhen would succeed him, and he also told Sun Chengzong, Li Xin and some other secret ministers about it, which made these secret ministers also puzzled.

On August 11, the seventh year of the Apocalypse, the day of Zhu Youxiao's death in history, Zhu Youxiao did not go out that day, and sat quietly in his bedroom for a day. But nothing happened, not even a nightmare, at this time Zhu Youxiao was completely relieved, knowing that he had changed history, there should not be anything that happened to Zhu Youxiao, but Zhu Youzhen still can't return to Zhu Bao, he should learn to govern the country, with his own words and deeds, no matter where he builds a country in the future and becomes the master of a country, he will not become mediocre.

Safely spent the seventh year of the Apocalypse in August, Zhu Youxiao began to rest assured that he would not be early, so a passionate Zhu Youxiao appeared again, the size of government affairs was basically handed over to Zhu Youzhen to deal with, and he entered the Daming Academy of Sciences again, organized the large and small scientific research talents here, and accelerated the research and development of the railway, this project is very huge, maybe Zhu Youxiao will not be able to complete it in his life, but he must start this project from now on.

In the transformation of Bo Jue, the pot camel machine has become more and more of the appearance of later generations, and gradually became the shape of the chain rail tractor, especially the use of universal joints invented by Bo Jue, which is now very proficient, under the mention of Zhu Youxiao, the chain rail bulldozer powered by the steam engine, the excavator, and the iron plough used by the small chain rail pot camel machine for ploughing land have been continuously developed, forming a series of chain rail machinery machines, and even the hand-held chain rail cultivators, cultivators, seeders, and harvesters have been manufactured. This is much more convenient to use than the original wheeled pot camel machine, and machines like this are very convenient to use, and one person can drive it.