Walking on the official road west of Mexico City, Yang Ce witnessed the supreme wisdom of survival created by his ancestors when they were displaced by the war – this wisdom is called unity.

At least in the New World Mexico City, the line is clear but nowhere to be found, it is in the hearts of everyone on the border.

On this side of the border is Fort Alva, that is, three fortresses built on the official road by the Spanish Duke Alva garrison in Mexico City to defend against the Ming army's eastward expedition.

On the other side of the border, there are countless villages along the way, these villages occupy a wide area, the population is prosperous, the most important thing is that they have built those with historical characteristics and strong military defense characteristics, magnificent giant buildings, earth buildings, earth walls, earth forts, earth villages.

In the historical environment of the border between Spain and the Ming army, immigrants from the four provinces of the Ming Dynasty moved here, and the imminent flames of war threatened their livelihoods, and the local people who had seized their land and waited for the opportunity to fight coveted their property.

In the past, the Hakka people had a history of vigorous migration, but now the turbulent environment and new life have forced immigrants from the four provinces to become new Hakka.

Thousands of miles to the country, they gathered here, regardless of the country, into villages, following the ancient tradition of being guests elsewhere, people gathered in one place to love each other. They used local materials and used more ancient than traditional soil ramming techniques to build around the mountains, building a walled building, a village and a building, and a building is a city.

The shape of the enclosure can be traced back to the architectural style of the Han Dynasty and the Minyue Wangcheng at that time, and the official military architecture entered the folk as late as the Song and Yuan dynasties, and the enclosed buildings were mostly square in that period.

To the southeast of the Japanese rebellion, in order to fight against the Japanese and defend the clan, a round wall was built.

Several concentric ring buildings inside and outside form multi-layers, the circular outer wall is rammed with raw soil to bear the load, the higher the wall, the thicker the bottom, the bottom of the outer wall is generally five or six feet thick, the thinner the upward, and the top is two or three feet.

After all, the outer ring building is the main defensive wall, and the roof of each building is covered with green tiles, lighting, ventilation and defense are all superior, and the people of the village will live in it, and the blood is allied.

In fact, most of the enclosed buildings on the border of Guangli were built by the people of various villages to hire immigrant craftsmen from Zhangzhou, and there was no lack of far-sighted people who knew that the situation on the border of the western Ming Dynasty was different from the situation in the southeast of the country, and they also knew that the Oriental Military Government pursued the policy of hiding soldiers from the people, and under the guidance of the two engineers and thousands of households of the Oriental Military Government, the shape of the enclosed buildings was changed more than that of the southeast of the country.

The most outstanding ones are the Guntai, the Tiger Tower, and the Fort, which are collectively called the three Taiwans.

On the enclosure of the building, the craftsmen chose the two or four corners of the outer ring building to add horse-faced walls that protruded from the air, and the lower floor was equipped with perforations and the upper floor was prepared with a shooting platform for the immigrant people with bird guns, hard bows and crossbows to be used as defense when they were in distress.

In the surrounding tower near the official road, in addition to the shooting platform that pays attention to the defense of the people, there are also shooting platforms for some weapons that the people do not have, such as tiger towers and forts.

Tiger platform is mostly built on the high-rise of the horse face wall, which is used for tiger squat cannon firing; The batteries are mostly built on the middle floor, which are specially used for infantry field artillery; Cement was added to the horse-faced wall of the fort, which was made from volcanic ash from Mexico City and seaside shell burnt powder from the cement factory of Changsheng, and the foundation was built with columns, and the exterior was rammed with raw earth.

It not only saves materials, but also ensures that the wall can withstand the damage to the wall by artillery firing.

The fort is not used in ordinary times, because the people have no guns in their hands, and there are only ten guns in a village, but the military government does not restrict the people from making their own bows and crossbows, as long as the village captain reports the number of weapons to the military government every quarter, so the immigrants have a large number of hot and cold weapons in their hands, but there are no artillery and rockets.

This is prepared for the officers and soldiers, once the front line starts, even if the officers and troops lose their camps, at most they can retreat 10 miles and immediately enter the surrounding buildings along the way to garrison, and the immigrant people who do not have weapons can withdraw to the next village, and the tiger squat rockets and two and five catties of field artillery can be pulled up into the building to start another garrison battle.

Yang Ce walked along the way, and saw no less than 20 walled buildings along the official road alone, some of which had already been built, and some of which were only halfway completed, and the people were still living in small houses outside the buildings, and there were always people on the lookout towers in the distance of the village who cast curious glances at the pirate team in strange costumes under his command.

But whether it was repaired or not, Yang Ce, who had superb military attainment, hung in his heart all the way, because he could feel that he was always under the surveillance of those circular fortresses on the north and south sides, and if those surrounding towers had artillery, the official road they traveled on was just within the maximum range of the artillery on both sides.

If it weren't for the Beiyang cavalry to lead the way, Yang Ce was afraid that his brothers would have lost their lives here when they walked across the border of Mingxi.

Sometimes when the official road enters the ridge, I ride on a horse and look into the distance, and I can see two or three such buildings on one side of the official road as far as my eye can see, and I don't know how many are far away from the official road - this is terrifying!

He had seen a lot of European fortresses in the West, and when it came to defensive capabilities, he thought that these towers were much weaker than those fortresses, after all, the size was here, and most of them were too small compared to the fortresses.

But what's the problem?

This is a dwelling.

No general would send one or two thousand or more troops to attack such a dwelling, it is pointless.

But they are here, guarding the official road, and you can't move forward without fighting; They are there, guarding every outskirts of the New World under the rule of the Ming Dynasty, and you can't control every inch of land without fighting.

There are hundreds of immigrants and aborigines living in each village, and at least in the official voice of Yuan Zizhang, the commander of New Spain, there is at least a small flag of regular army and 100 militiamen on both sides of the official road and on the border line.

Relying on such an earthen building, not three or five hundred people can fight it down? Even if you bring a cannon, you can't do it, first, the firepower is limited, second, the cannon may not be able to make a gap, and third, even if you are lucky enough to make a gap, you still have to attack the city in the end.

Yang Ce estimated that his commander had the same force as the previous commander of Alva in Spain to attack from here to Changsheng, and thought of a good solution all the way.

The siege of the tower was very delayed, and it blocked all the main roads and wilderness, so it was very difficult for the large army to bypass it, and it also prevented the opportunity for small forces to disperse and invade; But on the other hand, it provided an excellent offensive route for the Ming army, as long as a walled building was dragged, the Ming army could not only resist head-on, but also attack and encircle from the side or even behind.

Even if there are 30,000 troops, what can you do, Tulou really can't beat you, but you have only demolished four or five enclosed buildings in time to be enough for the Ming army to rush over from Changsheng, not only rush over, but also get excellent supplies, water and rest from the neighboring villages, and maintain a very high combat effectiveness to fight you in a decisive battle.

What's more, in Yang Ce's eyes, this kind of walled building that has risen all over the land actually controlled by the Ming Dynasty in the New World, and the immigrants have consumed huge manpower and material resources to build, means a kind of spirit, in a word-Lao Tzu is here, build the walled tower, from now on, no one wants me to leave here.

These dozens or even hundreds of towers standing proudly on the waist of the New World are probably the most vigorous immigration architectural history in the world during the Wanli period.