"How is it? Where did the Goguryeo go?" Yang Xuan looked at the simple map in his hand and asked Fan Yue, the captain of the investigation team who had just returned.

"Sir, the terrain here is very complicated. There are hills and valleys everywhere, and small plains. We have detected two Goguryeo people, one is located 100 miles north of us, and the other is relatively close to us. The location of more than seventy miles, calculated according to the current marching speed of the Goguryeo people, I think they will soon reach Lingyang Town under the mountain. Lingyang Town is the best place I have seen so far to release poisonous gas. Others The place. It seems that they are all too suitable." Fan Yue reported.

"Yeah." Yang Xuan wiped his chin and looked at the map in his hand. This Lingyang Town was on the north bank of the Linghe River. Because it was convenient to get water, Lingshui Town was established here.

The location of Lingshui Town is actually at the bottom of two hills, and the Ling River flows from the northeast to the sea in the southwest. No one knows the exact location, because the people of Yan Kingdom don't know much about this land. Although this Lingyang Town looks like a town, it actually has a few more households than other places. According to his understanding, the total population of the town does not exceed forty households.

"This place is indeed the best place to put poisonous gas. If we let Goguryeo people go down the mountain and enter Lingyang Town, we will be able to release the poisonous gas if we have the upper hand." The weather team leader Zou Wen said in a low voice. Because poisonous gas needs a lot of weather support, a weather team was formed. In fact, the entire weather team has only seven people, four soldiers who move things, two small officers who record data, and his weather team. team leader.

Yang Xuan wiped his chin and nodded. He also thinks this is a very good position. And it is very suitable for releasing poisonous gas here, because it is a valley, the poisonous gas stays for a long time, and it is not easy to drift to the mountains on both sides, and the killing power is greater.

Yang Xuan stood up at this time, but he still didn't decide when to do it. After all, there are still many unknowns that have not been determined.

His special operations team has only a little more than a thousand people. Most of them were recruited to transport gas cylinders. His team brought more than 8,000 bottles of gas. As far as he knows, there is another special team like him, but he doesn't know where it is.

"Right. Is there anyone in the town?" Liu Bo asked Fan Yue in a low voice.

"It is estimated that there are not many people. If there are people, they should have gone. There should be no people in this town. Anyway, there are very few people. It is estimated that the army will be able to rest and leave the next day. If they do Going west, about two hundred miles or more, it is estimated that they will reach Xiangping, where is the logistics supply point of the army. If I am from Goguryeo, I will definitely pass here. If I don’t pass here, go to other places. Locally, it is estimated to be fine, but the number of people will definitely not be too many.” Fan Yue explained.

"Oh. No one is fine. If there are people, I'm really worried. The poison gas will drift over, poisoning many people." Liu Bo nodded and said. Behind him, he carried all his protective gear, and all the protective gear was packed in the marching backpack. Inside the backpack, there is a gas mask made of leather. Two glass lenses are repeatedly sewn with a sewing machine on the two large holes. There is also a large metal tube in the position of the mouth and nose. There is a big jar under the tube, with some small meshes underneath, there are a lot of activated carbon inside, this is the earliest gas mask. In addition, there is a full set of leather protective clothing. It is summer, and it is very inconvenient to wear, and it is also very stuffy. If it is not for the danger of releasing poisonous gas, and the money is too much, it is estimated that no one is willing to do such a thing.

However, because gas masks look similar to skeletons, many people call them skeletons. Because they look like skeletons, especially the gas masks, they are too scary to wear.

"Oh. Liu Kulu, I know that you put poisonous gas, but don't put this poisonous gas indiscriminately. I look at you, it's very scary." Fan Yue said while avoiding Uncle Liu. People call him Liu Kulu from behind, because it seems that the other party is really the same as the skull, and the other party is the last person to release the poisonous gas, which makes everyone feel scared.

"If poison gas is released in Lingyang Town, when do you think is the best time to release the gas?" Yang Xuan asked everyone at this time. The weapons used by his special operations team are not guns. Instead, it uses poison gas. This weapon has been used before, but the record is not very complete. In addition, it is used almost at will. People who release the gas later are still poisoned for this reason. Therefore, the experience of releasing the gas still depends on them. Do it yourself.

"Let me talk first." Zou Wen stood up and said. His meteorological knowledge is only to fight at Qin State Station and record data, but Yan State lacks such talents, so Zou Wen was arrested as the captain of this meteorological team.

"According to my understanding, this poisonous gas is light green. Under normal conditions, according to the density stated by the people of Qin, it should be heavier than air. If this is the case, it is best to put it on the mountain. The best." Zou Wen thought about it for a while.

"According to the meteorological knowledge taught by the people of Qin and my observations, this is a valley area, that is, there is valley wind here.

"During the day is the valley wind. The bottom of the valley blows to the top of the mountain. At night it is the mountain breeze. The wind blows from the mountain to the valley. In this case, the time can only be at night. And the wind cannot be strong. If the wind is too strong, it will be blown away. But we just need to release the poisonous gas desperately." Zou Wen said.

"Therefore, what I suggest is that at night, we will do it. If the Goguryeo people rest in this small town, we can give them a vicious one, and if enough poison gas is released, they can be poisoned to death." Zou Wen looked at everyone and said.

"Okay. Okay. It depends on the direction of the wind. If the direction of the wind changes during the day, our situation will be bad. The things that poisoned others have become poisoned to us, which is not good." Liu Uncle said at this time.

"Bah. Bah. You Liu Kulu." Fan Yue said to Uncle Liu dissatisfied at this time.

"If you put poisonous gas, if you float to me, I will be the first to strangle you." Fan Yue threatened Uncle Liu.

"This weather officer deserves to have worked for the people of Qin, and he knows a lot. I think this will definitely work." Liu Bo said excitedly when he heard this. He was also afraid of poisoning, so he hoped that the direction of the wind would be very favorable for him.