Compared with the military formations they had practiced before, this formation was more varied and the various small formations were extremely complicated and difficult to practice.

On the other side of the testing ground, with Zhao Yun as the center, Wei Yan sat on one side and Feng Yong sat on the other side, not getting too close to the old man.

Jiang Wei, Zhang Yi, Jufu, Huo Yi and others sat around the three of them.

Especially Huo Yi, after a winter of supplementary training, and participating in quelling the rebellion in Longxi, he actually killed several rebels with a knife, and finally took off his internship hat.

Although he sat upright, he couldn't help but peek a few times at the three big guys sitting above him, feeling a little excited.

"What is that wall for?"

Zhao Yun pointed to a high wall hundreds of steps away from the stage and asked.

"Old General, that is a city wall built by an engineering battalion. It is similar to the walls of an ordinary city."

Feng Yong explained, "What we saw this time was the engineering battalion of the Qiang Xiaowei Mansion demonstrating how to use equipment to destroy the city wall, so they built such a city wall."

"How high? How thick?"

Zhao Yun squinted his eyes, seeming to be sizing up the city wall.

Feng Yong coughed.

Amei, the senior secretary and personal secretary standing behind him, immediately handed over an opened notebook.

The words written by Amei with charcoal pen are already eye-catching, at least they are more than one level better than the dog-crawling font of a certain person.

"Well, it's five feet high, two feet and five inches wide at the bottom, and one foot, two feet and five inches wide at the top."

In this era, five feet was about twelve meters, which was not too low.

Zhao Yun nodded, this was already the wall of a medium-sized city.

"Is the city wall strong? Don't you just let people pile it up randomly?"

Wei Yan suddenly asked.

Feng Yong smiled calmly, crossed his legs, and said, "The work of the Nanxiang Engineering Team."

If it comes from Nanxiang, it must be of high quality.

What's more, the Nanxiang engineering team has produced many works over the years.

Shuangnan Avenue is the best representative.

There is also the road from Nanzheng to Juxian. Even when the prime minister led the army to station in Hanzhong and passed Jianshan, he specially named the Nanxiang engineering team to come over and build Jianshan into Jianmen Pass.

During the attack on Pingxiang, the engineering team was responsible for digging trenches, building city walls, and intercepting the Weishui River.

When Wei Yan heard what Feng Yong said, he had no choice but to shut his mouth angrily.

While several people were talking, Wen Shi, the chief engineer of the engineering camp, came over and saluted Feng Yong, "Your Majesty, everything is ready."

Feng Yong looked at Zhao Yun.

Zhao Yun nodded.

Feng Yong nodded to Wenshi again.

Wen Shi got Feng Yong's consent, turned around and walked off the stage, raised his whistle and blew it hard!

Shouting started, and soldiers from the engineering battalion began to enter the site carrying various types of wood.

Some are long and some are short, some are thick and some are thin, some are thin and some are thick.

They first laid sleepers on the ground to serve as a stable frame for the catapult.

At the same time, the soldiers nearby began to assemble the catapult.

The whole scene looks busy but not chaotic, tense and orderly.

Wenshi, the engineer, is responsible for the overall coordination and provides guidance from time to time.

Two tall counterweight catapults were quickly erected.

Zhao Yun's face was slightly surprised. Although he didn't know how powerful this catapult was, the speed of its production was a bit beyond his expectation.

Especially looking at the two almost identical stone dump trucks, Zhao Yun was even more surprised.

"How could it be so fast?"

Zhao Yun finally couldn't help but asked.

"standardization."

Feng Yong said a term very eloquently.

"Every item produced in Nanxiang will be measured uniformly, no more, no less, and the difference cannot exceed three points."

It’s not that the current measurement is not uniform, it’s just that the error is too large to be standardized.

Take one foot as an example. Some of the differences are as much as four or five centimeters. How to deal with this?

Therefore, from Nanxiang to Yuexun, and then to Pingxiang, the same scale is now used.

Even the five major wool spinning workshops have to enforce unified measurement.

"The riprap cart is disassembled into different pieces of wood, and then the craftsmen make them according to the pattern and the same scale. When it's time to assemble it, just assemble it according to the drawings."

Zhao Guang couldn't help but look at Feng Yong, "What drawing?"

Feng Yong coughed again.

Amei behind her handed over another piece of paper, which was an exploded view of the riprap truck, with the length and thickness of each module marked on it.

Although no students have been able to draw maps so far, they are still qualified to draw a drawing of a stone dump.

Zhao Yun took the drawings handed over by Feng Yong, twitched his face a few times, shook the paper and asked: "Can the craftsmen understand these? And the soldiers can understand them?"

"Ahem, old general, the craftsmen and soldiers in the engineering camp are not good enough if they are illiterate."

At least the frequently used words, numbers, and units must be understood.

"Some craftsmen are students from Nanxiang Academy."

Feng Yong added.

This time, let alone Zhao Yun, even Wei Yan, who had always wanted to find fault, looked over.

It is difficult to pick out one of the hundreds of soldiers in someone else's army who can read, but you actually use them as craftsmen?!

Where is the grace?
Chapter completed!