A ladder hangs from the northern slope of the cliff from the foot of the mountain to the top of the cliff. Yes) ?meaning) ?thinking) ?book) ?yard)

Two rows of iron spears were driven into the mountain, and the spear shafts exposed by the iron spears outside the mountain were neatly sharpened by chrome steel swords, and in the middle of the two rows of spear shafts, wooden planks were nailed to form a wooden plank staircase, and there was a ladder every half a foot, and the stone peak was more than 20 zhang high, and there were more than 400 ladders.

Such a steep mountaintop, in such a snowy weather, if you just climb the ladder, unless you are a master of martial arts or immortal cultivation can climb to the top of the mountain, and the real world is that even a master of force 98 like Zhao Yun does not know what light skills are, so it is impossible to complete the task of all Han soldiers to climb to the top of the cliff along this slope at an angle of seventy or eighty degrees.

Two thick ropes descended from the top of the cliff, and hung down to the ground, which was the tool that the Han army relied on to climb to the top of the mountain, in addition to the wooden ladder and rope, Gongsun Bai also made a safety rope with ingenuity, which further increased the safety factor of the soldiers.

More than 500 brave white horses from the elite lined up neatly at the foot of the mountain, waiting to climb the mountain.

Their forces are all above 68, and such an elite, once it falls into the city, can be one as five, or even ten, in the case of a surprise attack, it is more than enough to seize a city gate.

Unlike before, this time their equipment was very simple, except for cotton robes and leather armor, they only carried a sword and a baggage.

The problem of climbing the mountain has been solved, and the most important point is how to fly from the top of the cliff into the city. They are not Batman, nor Ultraman, if they want to fall from the sky from the top of a cliff more than forty meters, enter the north city of Jiuyuan City, and then raid the east gate of the north city where the Huns are weak, they rely on the items in their baggage.

It was a round umbrella made by cutting off the curtain of the tent, and a solid leather rope was tied underneath, which was the simplest parachute.

At the beginning of sewing, many soldiers doubted how such a large round umbrella could ensure that the body of 100 catties would not be injured or even killed in the air, but after several days of testing, the soldiers were finally convinced.

The test started from the back of the cliff halfway up the mountain, all the way to the top of the cliff, it turned out that as long as you don't get hung by something or the umbrella breaks, jumping from the top of the cliff to the ground is like jumping from the ground more than one meter high, although the soles of your feet will still shake a little when you land, but there will be no much damage.

During the test, only one soldier fell and injured his foot when he was about to reach the bottom of the mountain during the descent, and the other soldiers were unharmed.

Jumping on the back, the soldiers will be blown everywhere because the wind is too strong, but fortunately, the side of the stone cliff is south, and the north wind is blocked by the cliff, so the wind will not be very strong. However, it is not completely without danger, because of the stone cliffs

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