After seeing nothing new, Xiang Jing turned his head and looked at Bai Ruxue on the side. At this time, he was concentrating on writing and drawing with pen and paper.

The same goes for other students, carefully recording what they saw and guessed.

Xiang Jing probably swept around, and I have to say that this Du Zhi clearly has two brushes. The teaching rhythm is well grasped. Let the students explore and find the answers by themselves, and then find out the questions from the answers. Let the students here really feel and learn the knowledge content.

When he was idle, Xiang Jing shrank the entire Licheng fortress and looked at the surrounding terrain. Since this place is so valued by Tiankui City, it should also have some unique places.

Sure enough, after shrinking the virtual projection, the whole view of the fortress, including part of the surrounding terrain, was revealed. Xiang Jing could see the mystery at a glance.

This fortress is located on an oblique hillside, originally there is a road through it.

However, for some reason, the terrain in front collapsed, forming a structure with high on both sides and low in the middle, similar to a line of sky.

As long as you occupy here, you can block the attack of a large number of enemies in front by virtue of its geographical location and natural danger.

If you want to make a detour, at least it will take more than ten days to pay for the draft. No wonder Tiankui City attaches so much importance to this place.

In the case of Xiang Jing, he might have taken someone over by himself.

Xiang Jing became more and more energetic, constantly analyzing the pros and cons of this fortress from all aspects, as well as how to resist attacking enemies and how to distribute combat power if war broke out here in the future.

Looking at it, fifteen minutes passed.

Du Zhiming clapped his hands, attracted the attention of the students to his side and said, "Well, are there any students who can answer the question I just asked?"

Everyone looked at each other. Several students raised their hands one after another to answer, but the answers were not up to the point, and some even digressed.

In the end, everyone looked at Bai Ruxue, who was bowing their heads and thinking about everything, even Du Zhiming.

No one spoke, they were all waiting for her quietly. Five minutes later, Bai Ruxue suddenly clapped her palm, as if she suddenly wanted to understand something, and quickly recorded it on the paper, and a light of excitement flashed in her eyes.

Du Zhiming said with a smile, "It seems that classmate Bai already has the answer, so please ask classmate Bai to answer the question I just arrived."

Bai Ruxue reacted and looked around, only to find that the eyes of the whole class, including all the leading teachers present, were focused on her.

She stroked her mind, stood up leisurely, picked up the written note in her hand and said, "Mr. Du, can I explain while operating the projector in the classroom?"

Du Zhiming nodded and smiled and said, "Of course." He walked off the stage, took the two bracelets on his wrists and handed them to Bai Ruxue.

Bai Ruxue thanked him, put on the bracelet and tried it without any problems, and then started her explanation.

"In my opinion, General Lin Yaozu chose these three buildings as the last line of defense, mainly because of his geographical advantage."

"Look, everyone." Bai Ruxue waved her hands, and the perspective of the three buildings changed to a bird's-eye view.

"These three buildings form a U-shape with each other, and they are all tens of stories high. When confronting the enemy, you only need to seal the main intersection, and then divide the hundreds of people into pieces to disperse them. With guerrilla tactics with monsters, you can delay more time with minimal sacrifice."

"And the rest of the main force" Bai Ruxue once again controlled the projection and turned into a face-up angle. She pointed to the building directly in front and said, "You only need to defend the point facing the largest exit."

"Most of the other entrances of the three U-shaped buildings are blocked, and among them there are soldiers lurking in them, rushing in just to die, and the front door opens, the monster will definitely choose this side first, relying on the advantage of the number to force it. breakthrough."

"However, this is also the point of General Lin Yaozu's cleverness. The space between these three buildings is very limited. You can only accommodate a few hundred monsters at a time. If you encounter a large number of monsters, you can use this terrain. Use enough firepower to suppress the monster's impact, thereby delaying time and waiting for the arrival of rescue forces."

"This is my answer."

Bai Ruxue finished speaking in one breath, with a confident smile on her face, looking at Du Zhiming on the podium with excitement and expectation.

Du Zhiming nodded in agreement and said, "Yes, Bai Ruxue's answer is relatively complete. The reason why General Lin Yaozu chose this place as the last line of defense was because of the advantages of the terrain. But if this is an exam, I I can only give you a passing score of 60 points. As for the other students, all of them fail."

"what!"

"Oh my god, I thought Bai Ruxue's answer was perfect. Is this just passing?"

Not only all the students present, but Bai Ruxue himself was a little confused. He knew that his answer was not perfect. There must be some factors that she did not consider and did not expect to see, but it is not just that she just passed. Score.

The leading teachers present all looked at Du Zhiming in disbelief, and even some teachers felt that if they were to answer by themselves, they might not be as good as Bai Ruxue's answer.

Some soldiers and soldiers from the military, or high-ranking generals, such as the major general named Pang who gave Xiang Jing the pass, knew a specific reason more or less in their hearts.

It has nothing to do with knowledge or status. It relies on the rich practical experience accumulated on the battlefield again and again, and the intuition of judging between life and death.

But no one spoke up. This was a lesson for these students. If they couldn't find out the answers by themselves, it would be meaningless to spend so much time and effort.

Later, some students added something one after another, but they were not 100% approved by Du Zhiming. The highest score was also Bai Ruxue, who added the content later.

Few others passed.

Du Zhiming looked at the students present and said, "Is there any other students to add? If a student can answer my question today, it doesn't need to be 100% correct, as long as I answer the point I want, I can get this. "

As Du Zhiming spoke, he took out a silver-white metal ball and said, "This is a defensive protective gear called jade armor, which can withstand 300 times the power attack. As long as a classmate can answer it today, I will take this one. Defensive gear was given to him as a reward."

As soon as Du Zhiming said this, the audience was in an uproar. The three-hundred-fold jade lock armor is not a particularly high-level defensive protective gear for the current earth, but for the students and even some teachers who are still studying in school. In other words, they are all rare good things.

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