The border between Yan and Liaodong.

"Such a large defensive circle is really difficult to defend. The Goguryeo people are now gathering, and within a few days, they will rush over. Once they react to our minefields, they will bypass our line of defense. Passing through other areas, this mine will not move by itself." Guo Sheng put down the telescope in his hand and said worriedly. His engineers have already laid mines wherever they can be laid. However, his number of engineers is too small. The minefields laid out are already their largest range of capabilities.

But Meng Fang at the back was looking at a telegram. This telegram comes from the staff.

"What's the matter?" Guo Sheng looked at Meng Fang curiously, because he also hoped that his minefield could cooperate with the opponent's artillery position to exert the greatest effect. In this case, it may be able to withstand the Goguryeo attack.

"Perhaps you should take a look at this telegram. This weapon will definitely not be a secret in the future." At this time, Meng Fang walked over with the telegram and handed it to Guo Sheng.

"This. Something is not so good. Is this your Qin Jun's secret?" Guo Sheng looked at Meng Fang and said at this time. To be honest, he really wanted to watch it. He was very curious about what kind of weapon Meng Fang said with such a worried expression.

"Look, nothing. It's just poisonous gas. After this use, everyone knows about chemical poisonous gas. Let's talk about it. Yan people have used it once before. Anyone who has taken advanced chemistry courses knows this kind of poisonous gas. This is not a military secret at all." Meng Fang said to Guo Sheng.

"Look at it." Meng Fang passed the telegram to Guo Sheng as he said. Guo Sheng looked a little helpless. He quickly read the telegram.

"The people of Yan Guomen have purchased a large number of chlorine gas tanks. This kind of chlorine gas is obtained by using direct current to dissolve sodium chloride solution. It is salt water. The chlorine gas in it is a toxic gas. This gas is generally used in the chemical industry. Of course, the paper mill also uses this thing, after all, it is relatively cheaper. Qin’s water plant also uses this kind of chlorine to purify the water source.” Meng Fang explained.

"Oh." Guo Sheng heard.

"The poison gas released by the people of Yan country last time was this kind of poison gas. Our officer asked me to pay attention to this. It seems that this battle was interesting." Meng Fang said.

"Release chemical poisonous gas, how much damage is this thing?" Guo Sheng asked curiously.

"I don't know. Last time it was released by the people of Yan country. It is estimated that only the people of Yan country know what happened. Yan people can think of this. I think." Meng Fang paused.

"The effect should be about the same, otherwise, why would the Yan people think of using this kind of weapon that is not a weapon." Meng Fang said.

"In that case, I also have to pay attention. After all, no one knows how powerful this thing is on the battlefield. This is terrible for us." Guo Sheng said. And he was wondering how powerful this chemical gas is. Can Yan Jun use chemical poisonous gas on a large scale to solve many problems?

"I think the main line of defense still needs to be completed by us, and now some weapons will definitely not be able to turn the tide of the battle at once." Guo Sheng continued. And Meng Fang was still thinking about this.

Under Jimo city.

"You've seen it too. The Chu people are like mice. They keep digging. They dig, that's the way they are every day. They just don't show up. When we attack, they hide under the trench and shoot at them. They can't hit them. When they enter the trench, they will fight with you. As a result, our casualties will be very high." Zhang Ti said helplessly to his officer.

"It's not a way to go on like this." Xue Gui nodded and said.

"The Chu people's method of warfare is to encircle us and die. Even if we don't fight, we have to confront them." Xue Gui said worriedly.

"This situation must be broken." Xue Gui decided.

"But the artillery, as well as all our current weapons, suddenly lost their use in the face of such a siege. In addition to our small number, the other side only besieged like this." Zhang Ying also said at this time.

"Everyone is thinking of ways to solve this problem. We must think of specific tactics." Xue Gui said.

"Well, I think we can confront them and also adopt trench tactics." Zhang Ti suggested at this time.

"No, in this case, the time it takes is amazing. This is definitely not the result we thought of." Zhang Ying shook his head and said.

"There is nothing I can do about it. If this kind of battle continues, the enemy will gradually infiltrate our side even by digging trenches. You have also seen our mines and barbed wire fences, which will only be effective when the enemy charges on the way. , But if trenches are used, those soil layers will cover most of the weapon threats for them. Although our firepower threat is great, the other party has trenches to cover them. The effect is not very obvious." Zhang Ti said.

"Sir." Zhang Ying thought for a while and said.

"Sir, how do we use Fire Attack?" Zhang Ying put forward her own thoughts at this time.

"If we dump a lot of fuel in the trench. It is Qin's gasoline. I think the problem can be solved." Zhang Ying proposed her own solution.

"No. In this case, the requirements for logistical supplies are too high. Our logistical supplies are delivered from the coastal area of ​​Qi State. After those merchant ships are delivered once, they will go south. If they are continuously delivered, it is impossible at all. "Xue Gui said, shaking his head. Obviously he has rejected this idea, perhaps, the fire attack can be effective for the trench. However, the amount of gasoline consumed is extremely large, which requires particularly large logistical supplies, and South Korea cannot do this at this point because their logistical supplies are not too smooth. They can only do general logistics supply weapons, but it is impossible to mobilize more resources on a large scale.

"We can't look at it like this and do nothing. If we do this, it will be very unfavorable to us." Zhang Ying said. Xue Gui just nodded. He didn't say anything. Facing the trench, everyone felt that the weapons and tactics in their hands were useless. It was the first time they encountered such tactics. Weapons are of no use to them. Push it forward. There is no way. If they really want to fight, the cost of casualties will definitely be high and scary. This is not something they can afford.

Facing the trenches of Chu Jun, they were helpless. There is simply no good way to solve it. Chu Jun's trench prevailed.