Chapter 1512: The sharp blade is always quenched with blood, blindly hitting the dark night, coordinate positioning

Although the Jin army's attack failed again today, they learned something through this attack. So that night, these earthen walls began to build up under the cover of darkness.

This time, the Jin army's leather bag wall was still in a zigzag shape, but they combined the lessons of the last failure and made timely improvements to the leather bag wall.

This time they built a single wall, which was jagged and the corners were larger. In this way, each Jin soldier hiding behind the wall could not only avoid the shooting on the wall, but also under the cover of his comrades-in-arms behind them.

In this way, the Jin army built a horizontal leather bag wall every 100 meters, and then let the zigzag wall continue to extend forward. After the next one hundred meters, another horizontal wall was built.

This time they finally got the trick, building walls faster, and this design poses greater threat to the city walls.

When they built the wall all the way to the city, nearly 100 meters, the Jin army then encountered another difficulty that could not be avoided. It was the No. 1 and No. 2 defense towers arranged in horns on the outside of the city wall.

At this time, the advantages of the defensive tower finally emerged.

Although the defenders on the city wall cannot see the Jin army behind the leather bag wall, the defense towers that went forward sixty meters away from the city wall can continuously shoot and kill the Jin army on the left and right sides.

It was not until this time that Shi Tuo understood how well-intentioned the fortress in front of him were!

These two were like steel needles, and the defensive towers pierced in front of the fortress, although they looked small and thin, but they could no longer take a step forward in their leather bags.

Then, the Jin army inevitably turned their attention to these two defensive towers that were thorny in their eyes!

...

In the city of Didao,

Shen Mo looked through the combat report sent by Li Muyuan and saw that although the lines on it were very simple to describe, he could see the thrilling danger and a strong smell of blood!

"On the 18th day of the first lunar month, the enemy was piled up firewood under the defensive tower at night, intending to burn it, but our side threw grenades and exploded the firewood pile."

"The 20th day of the first lunar month, the Jin army built more than 30 trenchers and rushed into the front of the No. 1 defense tower and threw huge rocks, trying to destroy our tower. Later, they were destroyed by artillery fire on the city wall."

"In the 23rd day of the first lunar month, huge rocks flew in the east of the No. 1 defense tower in the dark, and the throwing was extremely accurate. The platform on the tower was destroyed by flying stones..."

...

That night, Li Muyuan's eyebrows had already condensed into a lump when he looked at the report from the defense tower.

This situation is extremely strange and puzzled!

The opponent's huge rock was undoubtedly cast by a catapult, but in the darkness, his own defense tower could not even be seen from the other side, but how could the huge rock flying in the darkness opposite be so accurate?

Li Muyuan immediately sent the special forces members to go out along the tunnel and approached close to reconnaissance under the cover of night.\n.

After leaving the city, these special forces suddenly launched a surprise attack. They first killed a large number of Jin army catapult operators with shotguns at close range, and then burned more than 30 catapult vehicles with incendiary bombs.

When they came back, they handed several wooden poles one person high to Li Muyuan, saying that they were found on the Jin army's catapult position.

When Li Muyuan saw the mark carved by the knife on the wooden pole, he then turned his gaze to the three female strategists of the Flower God Group.

"Three coordinate positioning...they learned so quickly!"

At this time, Qing Mulian, the smartest among the three Flower Gods, stood up. She pulled out two of them from the middle of the wooden pole and stood them one by one on the ground.

Qing Mulian pointed to the lower half of the wooden pole and said, "The lower half of these wooden poles carries soil, which means he was planted on the ground."

"As long as the Jin army used the principle of three points to connect one line during the day, aimed two wooden poles at the No. 1 defense tower one hundred meters ahead. Then knocked two wooden poles into the ground one by one, one by one, they had the horizontal angle of our No. 1 tower."

"Then they carve the marks on the two wooden poles, so that the two marks extending lines just above the defense tower, and they get the pitch angle of the defense tower No. 1."

"In this way, they had two coordinates of horizontal angle and pitch angle on their two simple wooden poles."

"After this, they just need to calculate the distance between the wooden pole and the No. 1 defense tower and complete the positioning of the No. 1 tower!"

"In this way, they just need to push the catapult to the vicinity of the wooden rod at night. Then, use the corresponding directions of the two wooden rods to adjust the orientation angle of the catapult to three points and one line in a way. Then use the marks representing the height on the wooden rod to adjust the pitch angle of the catapult. In addition, they have measured roughly accurate distances..."

"I understand! In this way, they can use this method to achieve blind shooting of the catapult in the dark!" When he heard this, Li Muyuan and the other two girls nodded immediately.

You should know that such a superficial three-point connection first-line principle and three-coordinate positioning technology have been taught in Li Muyuan and his sword camp.

But they did not expect that there were such sensible people in Jin Dynasty. They actually found the means to blindly attack the defense tower at night through this method!

"It's nothing strange," he saw Gu Youlan figure out the principle here, and then said to Li Muyuan: "Who told us to nail so many steel bars with distances outside? These Jin soldiers followed suit and learned quite quickly!"

...

"Learn from war, you can grow up the fastest because the price they pay is life!" Li Muyuan said with emotion.

Afterwards, Li Muyuan immediately took action.

After he asked someone to dismantle a small trench machine into parts, he transported it to the No. 1 and 2 defense tower overnight.

Then the next day, Li Muyuan asked the cannons on the top of the city to find the shooting angle and wait for the arrival of the fighter planes at any time.

Just the next night, the Jin army still began to throw huge rocks at the No. 1 and 2 defense tower as usual in the dark.

These trench machines are particularly simple to make. As long as the wood is enough, it is not difficult to make a shelf and a lever.

Therefore, with the rush of craftsmen in the Jin army brigade, dozens of trenchers were prepared in one day and one night and began to attack the defensive tower.
Chapter completed!