When he saw the woman's appearance clearly, he suddenly screamed in fright, sat on the ground, and instantly broke out in a cold sweat-

! Isn't this Huo Qingtong Huo girl? Why did she come?

Of course, Sun Ada would not think that this Huo girl was in the spring tide, and he also wanted to taste his own taste-especially when he saw the corners of Huo Qingtong's mouth so cold and murderous, he would not think so. He wasn't stupid, and immediately thought of the correct answer - it must have been the Zheng slut who told Miss Huo. I really didn't expect this little slut to have such a big face, and she could invite Miss Huo to support her. If I had known such a thing, I wouldn't have beaten her idea. But he didn't know that Huo Qingtong was such a jealous and hateful character, even if it wasn't the Zheng family, if someone else went, she would make a move.

"Zheng's little slut is so ruthless...... Sooner or later, Lao Tzu will clean up his ......"

Sun Ada's heart was in a mess, but his face was getting paler and paler, because he had already made local books, such as the county records of a certain county, and so on, using mulberry paper. Of course, mulberry paper also has high and low, according to the quality can be roughly divided into four grades, the first and second thick and white for high-grade calligraphy and painting paper, the third and fourth thin and soft.

The exquisite mulberry paper can see the obvious fiber structure, and the appearance and feel are beautiful. And mulberry paper in this era, has been used in high-end calligraphy and painting, high-end mounting paper, in addition to ordinary paper, umbrella making, paste basket, do cannon introduction, wrap Chinese medicine, make fans and so on are also widely used.

The origin of its name is due to the fact that it is made from mulberry bark. The ancient Anhui country is produced in Anhui and Xinjiang and other places in later generations, and the southern and eastern parts of Xinjiang inhabited by the ancient Anhui country and the Uygur people have a hot climate, rich water and soil resources, suitable for agriculture, and mulberry trees are everywhere. Refined mulberry paper is also a necessary accessory for Uygur girls to embroider hats, when embroidering hats, the warp and weft of the grey cloth should be removed in interlaced rows, and the small paper sticks made of mulberry paper are inserted into the warp and weft spaces of the cloth blank after embroidery, so that the flower hat is crisp and elastic, soft and hard.

Of course, Xinjiang is out of reach, and now outside Jiayu Pass is no longer the territory of the Ming Dynasty, and the Ming Dynasty court and local governments at all levels consume countless mulberry paper every year, most of which are purchased from Anhui.

Because of these characteristics, mulberry paper has also become the first choice for making military maps.

Dong Ce's map is dark yellow and dark, and the edges are even hairy, which is obviously some years old. It's just that the lines on it are still clear, and I don't know how to save them.

In the middle of the map, which occupies most of the map, is a reckless mountain, and in the middle of the mountains there are many holes through them, some marked by rivers, and some of which are dried up valleys. In the middle of these passages, or slightly to the south and to the north, there is a symbol of the fortress of the city. It seems that it is holding the holes between these mountains.

On the north side of this reckless mountain, the map is an empty white land, and on the large blank space, only one or two cities are marked, and the names of places are written next to them, and the rest of the place, there are none, which seems very sketchy.

On the south side of the mountain range, it is much more detailed, not far from the mountain range, there are fortresses, these fortresses are almost east-west, connected together. The name is marked next to the fort, almost filling the bottom half of the map. As far as the eye can see, it is dense.

At the bottom of the map, there is a big city with the words Datong Town written on it.

In the middle of the east-west fortress group next to the mountain range, you can see the names of Zhenqiang Fort and Zhenhe Fort.

This mountain range is Daqing Mountain.

This map is the border defense map of Datong Town, the mountain range on it is Daqing Mountain, and the series of fortresses in the south are the defensive castles on the south side of the mountain range. Dong Ce's Rock Fort, Zhenbian Fort, Zhenhe Fort, Zhenqiang Fort, etc., all belong to one of them.

The structure of the defense system of the border towns of the Ming Dynasty depended on the natural divided terrain of the Central Plains and the outside of the Saiwai. Between the north and the outside of the Saiwai, basically to the continuous mountains are the majority, in the mountains stretching, the Ming Dynasty spent a lot of money to build the Great Wall, the Great Wall on the beacon tower and the fort are numerous, this is a line of defense. In this mountain range, there are many passages that can be passed through due to the presence of rivers running through the mountains or the existence of dry river valleys. Especially in the north, it is very cold, and in winter, when the rivers are frozen, these channels are even more unimpeded.

Of course, there are not many such holes, but there are definitely a lot, and the Ming Dynasty basically built forts in these holes, relying on the terrain. These fortresses are the key passes. Whether it was Mongolia in the past, Tatar Warat later, Chahar now, or Jiannu in Liaodong, if you want to go south to the Central Plains, you basically have to pass through these passes.

And on the south side of the mountain range, there are border forts, and on the periphery of the border forts, there are fire road piers.

Some have no mountains, an open area, and the fire pier extends far outward.

The nine border towns are generally the same, and the three towns of Datong Town, Xuanfu Town, and Jizhen Town, because the north side is relying on a large area of east-west mountains, this characteristic is even more obvious.

Such a perfect defense system, both inside and outside, there are natural dangers to rely on, and if the enemy wants to break through, the only way to use human life is to strengthen the top. There are also heavy troops stationed in the rear, which can come to reinforcements in large numbers at any time, and there are abundant supplies from the rear. Under such a fierce battle, it must be the attacker who can't hold it out in the end.

Such precautions can be said to be impregnable.

However, no matter how good the system is, no matter how good the city defense is, it must always be done and implemented by people. And in the last years of the Ming Dynasty, the armament was extremely lax, and the defenders of those passes were a waste of one race. When some saw the enemy, they scattered in a hurry, and some resisted slightly, but they were also attacked and down, and they didn't even know how to light the wolf smoke. In these years, it has never been easier to build slaves and enter the prison. This map was borrowed by Dong Ce from Liu Ruozai, otherwise with his status, he would not be qualified to contact this. Note that it is borrowed, and it is necessary to return it after reading it. Military maps are extremely important strategic materials in any era, and even more so in the era of underdeveloped science and technology. Losing a map or leaking it is a felony.

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