At this time, Bailiyan (Wei Xian) was cold, and his back was also cold, Han He was worthy of the name of a general, thinking that when he fought in Jiulipo, he should not have told Wang Shuo about the miasma, and Wei Dan and his 60,000 army would not be wiped out. I fell into such a field today, maybe I was atoning for my sins.

Thoughts flew in his heart, Bailiyan continued to crawl towards the southeast camp of the Jin army, and found from time to time that the night patrol of the Jin army and a small group of cavalry sentries came and went, obviously the gap between the east gate and the two large camps outside the city was extremely tight, and the patrol density increased by three times, which also made Bailiyan think that the east gate may be a weakness of the Jin army, but how to use it?

Quietly climbed to the southeast camp, the situation was the same as the northeast camp, no carriages were found, and a large number of horses were not found, which means that the 30,000 cavalry of the Jin army was not in Duyang, but in other places.

Bai Liyan was shocked and asked Zhao Guang:

"Zhao Guang, who came to visit the camp yesterday?"

"Mo Qian, Guan Shu, Fan, Qian Qing and other twelve people, what's wrong?"

"They didn't find out that the Jin cavalry was no longer in the camp?"

"Shhh...... Your Excellency said this, the cavalry of the Jin army has indeed not found any traces, why do you want to return to the camp and ask them again in the unknown day? ”

If the cavalry of the Jin army was not in the camp, it was long before the Xian army arrived in Duyang City, and it was long gone, or it was out of the camp overnight last night. If it was last night out of the camp overnight, wouldn't the Xianjun army be able to see all kinds of meticulous work and scouts? But if the cavalry of the Jin army is long gone, the fine work and scouts sent by Zhao Xun last night did not find anything abnormal?

Could it be that Han He is in Duyang City? That can't put down 30,000 cavalry, even men and horses are not a small number, there must be a place to sleep, and the watchtower of the Xian army is not blind.

Unless the cavalry of the Jin army is no longer Duyang, but has already gone elsewhere, and is not within the warning range of the Xian army, Han He dares to put only 60,000 people to contain the 120,000 people of the Xian army, I am afraid that there is a sure way to win.

As a result, the two large camps outside the city in the northeast and southeast are very likely to have only 20,000 people, and they have inflated the camp tents in order to confuse the Xian army scouts and meticulous work.

So, where can the Jin army send the cavalry, and there are so many vehicles, is it to transport grain, or to escort the infantry reinforcements?

After thinking about it, Han He is afraid that it will be difficult to have reinforcements in the short term, so it may only be used for other purposes.

"So what can you do?"

Secretly thinking, Bai Liyan's eyes were always fixed on the Jin army camp, and he still couldn't figure out why Han He transferred the cavalry and so many vehicles.

Thinking in their hearts, Bai Liyan and Zhao Guang said:

"Zhao Guang, we won't go back to the camp tomorrow."

"Don't go back to camp!" Zhao Guang was taken aback.

"There is fraud in the Jin army camp, and it is suspected that there are only 20,000 people in each of the two large camps in the southeast and northeast of the Jin army."

"How is this possible?"

Zhao Guang was incredulous, and Bailiyan hurriedly said:

"The cavalry of the Jin army must not be in Duyang, we must find out what the Jin army is planning."

"This is not something that I can measure by my pawns, Your Excellency should hurry back to the camp while the sky is still dark."

"No, the stakes are high, and we can't stop there. Listen to me, crawl two hundred steps to the east, and tomorrow morning I will lie in ambush outside the city, continue to spy on the movements of the Jin army, let's go. ”

Bai Liyan said sternly, and took Zhao Guang and Weng to climb to the artemisia grass more than 300 meters east of the camp outside the Jin army.

Han He's unusual behavior was disturbing, and it was obvious that retreating to Duyang City was not just about holding on, but about wanting to inflict heavy losses in one fell swoop, and even annihilate the main force of the Xian army. This means that Han He has the certainty of a decisive victory, otherwise he would not be able to transfer the 30,000 cavalry. But the matter of the carriage is still puzzling, and I really can't figure out what Han He's plan is.

Covered with straw clothes, it seems that he is sleeping for a few hours, waiting for ten minutes in the morning, the ground is foggy, the visibility is not more than twenty meters, and the Jin army outside the city has hidden activities, but it is not clear to see. I thought that the fog would completely dissipate after the sun rose, but it lasted for a few hours.

Seeing this, Bai Liyan asked Zhao Guang:

"Zhao Guang, there is fog in the early spring in Jiangdong."

"It's not clear that the subordinates are not from Jiangdong."

At this time, the urn lying on the side said:

"Duyang Duyang, put an end to Gangyang, this is the origin of the name of Duyang, so there must be fog in the land of Duyang every spring, autumn and winter."

As soon as the urn's words fell, Bai Liyan was shocked, and asked again:

"How do you know?"

"The little one has been in the army for more than 20 years, and the Zhijun fought with our army in Duyang more than ten years ago, and the little one also heard what a general said at that time."

According to the urn, the reason why Duyang is called Duyang is because the surrounding boundary of Duyang City is too heavy, and there are four seasons a year, spring, autumn and winter are the most prone to dense fog, and summer is misty.

In addition, the temperature near Duyang City in summer is always lower than other places around, so Duyang City gradually has a saying that Gangyang is eliminated, and the name "Duyang" comes from this.

Continue to observe for a long time, until the fog gradually clears, and the sun is already very high, and it is less than ten o'clock. At this time, there was a faint vibration on the ground, and the frequency was rapid and frequent, which was the rhythm of the rapid advance of the large army.

The tremors came from the east, and when you looked closely, you could see the flying dust of the cavalry as they ran.

In order to prevent the cavalry from trampling, Bai Liyan and the three of them hurriedly shifted their positions and continued to lurk and observe. It can be seen that the cavalry of the Jin army is very fast, with a number of about 30,000, and it is worth noting that there is a lot of mud on the horses, almost every horse has them, and the soldiers are also stained with mud, especially on their boots.

"What did the Jin army do, how could it be contaminated with mud?"

Murmuring secretly, Weng said:

"There is a river that is not deep seven or eight miles west of Duyang City, maybe where did the Jin army go to feed the horses."

"Hey the horses? Can more than 30,000 people go together to feed the horses? ”

Bai Liyan questioned this statement, even if it is to feed the horses, it should be 30,000 people in several batches to feed the horses in turns, how can there be 30,000 people to go together. And it doesn't make sense to take advantage of the darkness to feed the horses.

At this time, the cavalry of the Jin army arrived at the camp one after another, and then repaired outside the two large camps in the southeast and northeast on the spot, and the soldiers were very tired.

"It's strange, what are they going to do this night, they can be tired like this."

The doubts in her heart were even heavier, and Bai Liyan suspected that Han Heding had no good intentions and dispatched so many cavalry, it was definitely not to feed the horses, it should be engaged in some kind of engineering project, and it was an engineering project that needed horses, otherwise why would it be stained with mud.

Thinking of this, Bai Liyan asked the fine work named Weng:

"Seven or eight miles east of Duyang City, in addition to a river, there are other anomalies."

"Uh......" he thought for a moment and said, "this river sometimes flows downstream, sometimes upstream, and I have heard of it below, but I have never seen it. ”

"Shhhh......h Bailiyan is heart is tight, what is the situation.

Unless the landform changes, the downstream becomes the upstream, and the upstream becomes the downstream, how can the downstream water flow upstream. Could it be ......

At this time, Bai Liyan was shocked again, he thought of the stream in the back camp, it can't be that the Jin army wants to flood the Xianjun camp, otherwise the Jin army cavalry ran to the river to do construction.

Thinking of this, Bailiyan planned to go to the river to have a look. The east of Duyang City is within the sphere of influence of the Jin army, and the scouts of the Xian army cannot go there, which is a blind spot for reconnaissance. What Han Hezhen is going to do, then it is very clear.

With Zhao Guang and Weng, the two slowly withdrew from the camp of the Jin army, and went all the way to the east.

There was indeed a Jin army camping in the woods by the river, and looking to the southeast, you could see that there was an inconspicuous camp, with various tools piled up in a mess, including some excavated earthwork and stones.

Bai Liyan and the three of them carefully lay in the artemisia grass to observe carefully, presumably the Jin army was stationed here very early, and Bai Liyan even suspected that Han He immediately sent people to this place for construction after getting the news of the loss of Feicheng. In this way, it is obvious that such a large amount of work cannot be done by one or two thousand people, at least in half a month.

The Jin army dispatched cavalry, obviously more efficient than the infantry, seven or eight miles of cavalry only a few minutes or ten minutes, if it is infantry, the mighty normal march will take an hour or two, and the logistics support is also troublesome, so the infantry can not be more efficient than the cavalry in any case.

I saw that the Jin army had dug a big pit on the southeast and west banks of the river, but it was not dug through, and there were still five or six zhang of soil separated from the river bank.

At this time, the Jin army was making rice, and there was faint cooking smoke in the forest. But it was a bit late, and it should have just returned to the camp for dinner after the construction. When he saw that the Jin army was cooking without firewood, he was stunned that Bailiyan was well-informed, and he had never seen it.

In order to see more clearly, Bailiyan ventured to climb closer and peep, and almost stuck to the periphery of the forest, and the nearest camp tent from the Jin army was only more than ten zhang.

I saw that the Jin army raised the fire by propping up three stones on the ground, and there was a copper pot sitting on it, and there was nothing under the pot, but it could catch fire, and there was a small pit under the flame, and a thumb-thick metal pipe was inserted in the small pit, which should be copper, and the fire came out of this copper pipe.

If someone else saw it, they thought it was immortal. But when Bailiyan collided, the copper pipe inserted into the ground was a drainage pipe, which led the underground biogas or leaking natural gas out of the ground, and as long as it was ignited, it could ignite.

"What the fuck, it's still using natural gas!"

Bai Liyan believes that Hanhe must not know what natural gas is, but the wonder of fire under the forest can be known through the mouths of local people. If that's the case, wouldn't Han He want to blow up the entire underground natural gas?

The area of the oil and gas field is extensive, ranging from a few tens of square kilometers to a few hundred square kilometers, and if the underground is blown up, it will undoubtedly be able to annihilate the Xian army once and for all, but the actual situation is not so simple, it is just the whimsy of Han He.

Natural gas is buried deep underground, and even if there is shallow natural gas, it is found in fissures, cracks and soils deep underground, buried under pressure, or slowly released, and it is impossible to ignite it entirely.

It is possible for the combustion gas to deflagrate only near the gas outlet, and it is impossible to blow up the entire underground, because it is difficult for the air to enter the depth of hundreds of thousands of meters underground.

The fact that the river can change its direction is probably also due to the huge pressure of underground gases, which causes the geological structure to uplift and change the height difference, and this geographical phenomenon, because of the limitations of knowledge and lack of knowledge, makes the locals feel that it is some kind of supernatural phenomenon.