This mountain range is the remnant of the Black Camel Mountains. It stretches from northwest to southeast in the northern part of Yinzhou. The vertical height is not high. Zhao Muyun estimated that the highest peak is more than 500 meters.
However, these continuous mountains are the natural barriers that cause headaches for the Tatars.
The mountains are covered with dense vegetation and numerous gullies. They are rarely visited by people, and it is difficult for people to pass through, let alone war horses.
The mountain range is divided into two sides by the Zishui River. One side extends to the grassland and Gobi in the north, and the other side connects to the Heituo Mountain, forming a clear dividing line between geographical units.
The Zishui River here is already over a hundred meters wide and the water flows rapidly.
The location of the old city is very strategic, it is located on the west side of the river, surrounded by mountains and water.
By making full use of mountains and rivers, a strategic pass that is easy to defend and difficult to attack can be formed.
"The city should not only be located on the main road, but also extend into the river valley, diverting river water to form a moat."
"The original city isn't big enough to accommodate our two thousand people, but in the future, we need to at least double the size to accommodate our troops!"
"A trench on the north side of the city must also be dug to form a system with the moat and the river, primarily to defend against the Tatar cavalry."
"Also, we'll build beacon towers and lookouts on the hillside to monitor movements to the north. If possible, we'll also establish beacon towers on the northern edge of the grassland."
"Also, we need a channel to enter the Gobi Desert and quickly transport large quantities of fine salt!"
“…”
Zhao Muyun looked at the virgin land that belonged to him and talked about city planning to his subordinates.
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