The new base was named Mingyin City, which is the second city name in the American city naming system approved by Zhu Youxiao himself. Yes, Zhu Youxiao ordered the cabinet to draw up the names of twenty American cities, the first is Huaxia City, the second is Mingyin City, and the third is Tianqi City. Judging from this trend, Zhu Youxiao's ambition for the Americas is not small.

New tools and new agricultural techniques have led to a significant increase in food production. With food in his hands and no panic in his heart, Zhou Yanru wantonly recruited the Yin family tribes from all over the country, and the Yin family, who lost the Yin family empire, quickly identified with the same skin color, and Zhu Youxiao emphasized that the Yin family must be treated as a Ming person, without any discrimination, which also makes it easier for the Yin family to integrate into the collective dominated by the Ming Dynasty.

Before the Yin family, the concept of private property was not strong, and the tribe was basically communal. After Zhu Youxiao knew this, he took advantage of the situation and also realized some public ownership in the Ming and Yin collectives in the Americas, such as the public ownership of grain, the opening of public canteens, and the meeting of tribal leaders for collective affairs, all of which could make the Yin family feel that they were valued. However, Zhu Youxiao also introduced the concept of more work and more rewards, people who work weekdays will get some exquisite Ming silver coins as rewards at the end of the year, it is impossible to promote social development only with public ownership, and it took nearly 30 years for China to understand the truth in later generations, and there is no reason why Zhu Youxiao will not understand.

Mingyin City developed rapidly, while Huqin Zhai continued to advance in all directions, and soon established Tianqi City in the north of Mingyin City and Hongwu City in the south of Mingyin City. The recruited Yin family quickly increased to 50,000 people, and Hu Qinzhai selected special soldiers from the Yin family to form a Yin family brigade on the basis of the original Yin family army, with Sange as the brigade commander to assist the guards in fighting.

Chen Houfu led Geng Zhongming's troops to the north along the coastline, and whenever they arrived at a suitable anchorage, the Ming army and the Yin family went ashore to find the local Yin tribe. Each tribe left ten Ming soldiers and ten Yin family members of Huaxia City to integrate them.

A month later, the American Fleet began to return, and at various anchoring points, there were already a large number of Yin family members waiting to board the ship here, and when they arrived at Yongle City, fifty miles north of Huaxia City, there were already more than 10,000 newly recruited Yin family members on board. The residents of Huaxia City, who were built here in the early stage, have built a large number of houses and stored a large amount of grain. After everyone disembarked, they began to build houses and reclaim land.

After returning to Huaxia City for a short rest, the American Fleet began to sail south again. is still the same routine, and two months later, the Great Han City in the south of Huaxia City accommodated more than 20,000 Yin family members.

Except for Huaxia City, where Zhou Yanru personally served as the city lord, the other cities were all served as the city lords by the Yin family, who had returned to Shun in the early days. This move also made the Yin family more at ease with the Ming people, and then respected, they already regarded the Ming people as their real kindred, Geng Zhongming's subordinates had all married a Yin family as a concubine, and the Ming people's carefulness and thoughtfulness made those Yin family women who were concubines only want to sell their sisters to the Ming people. However, it was limited to the rule that the Ming people could only accept one concubine, so they now hit the Ming sailors and Hu Qinzhai's guards again.

Hu Qinzhai's brigade will stay here for at least three years, and Chen Houfu's sailors will sail non-stop between the Americas and the Ming Dynasty in the foreseeable time, so both of them agreed that their subordinates will take concubines here, which is of great positive significance for stabilizing the morale of the army and the Yin family. But it's still the same rule, no matter who you are, you can only take one concubine in the Americas.

The climate here is hot and humid, and rubber tapping can be done all year round. The Luzon people had never seen rubber trees before, and the Yin family used some primitive methods to use rubber, so they needed to try to pick rubber from scratch, and the Ming army specially sent 500 literate soldiers to record the details of their rubber picking, and then compared the amount of rubber collected by different methods, and tried to find a rubber picking method with a higher yield.

When the collected rubber accumulates to a certain amount, two ships will transport the rubber back to Beijing for the institute to conduct various research. After understanding the impact of vulcanization on rubber, the research institute has been able to make rubber into soft cushions, and then use it on the train, which is not only lightweight but also can greatly reduce vibration, so that the stability of the train car is greatly improved.

The research institute made rubber products for sealing, which greatly improved the sealing performance of the steam engine, the speed of the train increased by about ten miles, and the speed of the steam ship in still water also increased from the original twenty-four miles to thirty miles.

The rubber tires that the emperor gave were also made and used in the carriages, of course, simply with a layer of rubber on the outside of the original wheels, but this can also greatly improve the balance and comfort of the carriage. After Zhu Youxiao and the research institute said that the inner tube and the outer tire are different, they soon used rubber with different degrees of vulcanization to manufacture the inner tube and the outer tube, but the inner tube manufacturing is more complicated, because it has to be combined with the valve core, and at the same time, it is necessary to manufacture the pump, which can only be manufactured by hand for the time being, and the speed is very slow, so it can only be used for testing, and it is not practical.

After Zhu Youxiao told the people of the research institute the principle of the bicycle, the first two-wheeled bicycle of Daming was born. Zhu Youxiao became the first trialist, he tried it out, while putting forward suggestions for modification, and immediately some students of the research institute took it to transform, and when Zhu Youxiao felt that it was almost the same as the later generations (of course, it refers to the performance, the appearance is still not good), and more than ten cars were built, and the special test drivers tested them on the highway. After a number of wrestling, the test riders from these Guards mastered the art of riding a bicycle. They were in good physical condition, running 25 to 30 kilometers on the road in one hour, while the test runners who followed them were left behind by them for more than ten miles.

Sun Chuanting immediately realized the importance of bicycles in military operations, and urged the Ordnance Bureau to manufacture bicycles in large quantities as soon as possible to supply the army. Zhu Youxiao also put forward the idea of three-wheeled bicycles and multi-person bicycles, which made the research institute constantly urge the Ordnance Bureau to provide them with a large amount of steel, and proposed that more sulfur and more rubber were needed.

A year ago, Danong Island explored a sulfur mine, which is relatively rich. After a year of trial mining, a certain scale of production has been formed, and the emperor issued an order to order Wei Liangqing to recruit more miners in the local area to increase the production of sulfur.