PS: There is something in the next two days, and it cannot be updated, please forgive me.

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If you dig a hole in the ground, there will inevitably be a sound, and if you want to know its direction, you don't need modern sonar equipment, you just need to dig a pit and put an empty tank, and you can hear it. This is the wisdom of the ancients.

"Zhang said, I will prepare the fierce fire oil, as soon as your people come out, I will pour it into the hole, and then light a fire to burn you." A sinister smile crossed Yusuf's face.

He was very unhappy that he lost badly with Yang Siqiao, and he was naturally happy when he finally had the opportunity to clean up the Tang Army.

As soon as the order was issued, the Arab imperial army dug many pits in the city, buried them in vats, and sent people to guard them. There are all directions, and you can completely hear the movements of the Tang army.

Especially the empty tank in the north of the city, the movement was quickly heard.

"Well, in the north of the city, it's good." Yusuf gave an order, and the Arab Imperial army focused on defending the north of the city, waiting for the Tang army to come and die.

However, what Yusuf didn't expect was that he was first-class, second-class, third-class, that is, he didn't see Tang Jun come out, so he was a little confused: "Aren't the Chinese going to sneak attack?" But if it weren't for a sneak attack, what was the use of the Chinese digging holes? ”

Youssef thought about it, but he couldn't understand the purpose of Zhang's move.

Time passed day by day, and soon it was the half-moon period, and the Tang army finally dug a hole in the ground.

Zhang said that he led the generals into the cave and looked at it, only to see that the cave was dense, like a spider web. Moreover, these holes are very wide. Enough cattle and sheep to pass guò.

"Good." Zhang Shuo nodded approvingly.

"Boss, what do you have to do digging these holes?" A general hurriedly asked.

This is a question that many people have asked. Zhang Shuo didn't say it explicitly, and this time was no exception, and the generals were eager to pull out the answer from Zhang Shuo's mouth.

"Bring in the oil and pour it into the hole, be sure to pour more." Zhang Shuo ordered loudly.

"Dashuai, if you pour the fire oil into the ground, won't it soak into the soil? What does this do? Chen Xuanli hurriedly reminded.

"It's useful." Zhang's answer was very round. It's enough to confuse people who understand.

The generals knew that Zhang Shuo would not say it explicitly, so they had to bury this question in their hearts.

As soon as the order was handed down, the soldiers of the Tang Army took action. Bring in the oil and pour it on the ground. According to Zhang Shuo's request, the entire hole in the ground collapsed, and the hole in the ground was greasy.

"Drive the sheep and cattle in. The fortress is full. Zhang said and ordered.

"Great. What do you do to drive the sheep and cattle in? A general asked puzzled.

This question is exactly what the generals are thinking, however, Zhang Shuo did not answer as always.

The Tang army drove the cattle and sheep into the hole and stuffed it to the brim.

"Ignition." Zhang said an order.

The Tang army lit the fire, and all the entrances were poured with fierce fire oil, which was easily ignited. I saw countless fires digging into the ground.

After a while, there was the mournful screams of cattle and sheep in the cave, and there was a burst of scorching smell.

"This ......," the generals smelled a strong stench. I don't know why.

Zhang said that he would attack with fire and burn down the city wall. But what good is it to light a fire in a hole in the ground?

Chen Xuanli and Yang Siqiao glanced at each other, and if they realized, they nodded in unison and praised loudly: "Wonderful!" Wonderful! It's a brilliant plan! ”

Zhang Shuo nodded appreciatively and said, "You finally thought of it." Not bad. ”

"Don't dare to be. Compared to the big handsome, we are far behind. Chen Xuanli shook his head with emotion and said, "We didn't figure it out for ten days and a half months, and it wasn't until after the fire was lit that we thought that we were 108,000 miles away." ”

"What do you say?" Xue Zhi asked puzzled.

Zhang Shuo, Chen Xuanli, and Yang Siqiao glanced at each other, smiled loudly, and did not explain to Xue Zhi.

The soldiers of the Arab Empire at the head of the city were patrolling, and the detachments were gúò.

It didn't take long for the soldiers of the Arab Empire in the north of the city to notice the abnormality, and they all sweated like rain and complained loudly: "This weather is really good, how can it be so hot?" ”

"Hot? It's Mayday, can it not be hot? ”

"But it wouldn't be that hot, would it?"

"yes. All of a sudden, it was hot, so hot that I couldn't stand it, I was sweating all over, and I was panting hot. ”

The soldiers of the Arab Empire felt as if they were in a furnace, uncomfortably hot, sweating profusely, and even inhaling was hot.

"No, no. It's getting hotter and hotter. Although it was hot, it could still endure it, but now it was unbearable. ”

"It's like standing on a fire."

"My feet felt like they were on a coal-fired fire."

"Feet? No, the ground is hot. ”

"yes, the ground is getting hotter and hotter, like a red-hot soldering iron."

It didn't take long for the soldiers patrolling the north of the city to find the ground getting hotter and hotter, like red-hot soldering irons.

"How did this happen? How could the ground be so hot? ”

"I really can't stand it, retreat, retreat."

"But we're going to patrol, and if we retreat, the adults won't spare us."

"No, it won't. It's so hot here, and if you're here, you'll be burned to death. ”

The soldiers of the Arab Empire were discussing, and left the city and retreated to a distant place.

It's a pity that the distance doesn't stay long. It wasn't long before their footing became hot and they had to retreat again. In this way, they retreated again and again, and they didn't know how many times they retreated, and they retreated farther and farther.

"Look, Chengtou, what's the red?"

"Really? How can the walls of the city be red? It's like a red-hot brick. ”

After a while, the soldiers of the Arab Empire noticed that the northern wall was red, like a brick being burned.

"Something is wrong! Hurry up and report to your lordship. "The soldiers here finally noticed that something was wrong, and hurriedly sent someone to report it to Yusuf.

Yusuf was discussing the military situation with the generals, and they couldn't guess what Zhang said about digging a hole in the ground. It's a sneak attack, I've been digging for so long, but there's no movement. If it's not for a sneak attack, then why dig a hole in the ground?

I'm talking about it. The guards came in and reported: "My lord, the city wall in the north of the city has turned red, like bricks being forged. ”

"Impossible!" A roar rang out. The generals vetoed it in unison.

"You're not lying?" Muhammad asked hurriedly.

"My lord, who would dare to lie about such a big event? Whether it's true or not, you can see at a glance. The guard hurriedly reminded him.

This is very reasonable, and if you want to lie about the military situation, you must find a decent reason that is not easy to be exposed. The walls of the northern part of the city turned red, like burnt bricks, which was too easy to find. Just go and see it. If there is no such thing, who would dare to talk about it?

"Let's go! Check it out. Yusuf's eyes flashed, and he stood up violently. Stride away.

The generals followed, hurrying to follow.

The group hurried towards the north of the city. From a distance, I saw that the city wall in the north of the city was red, like bricks being forged, and everyone was dumbfounded.

"How did this happen? How did the walls become like this? That's possible. ”

"Could it be that Allah has sent divine punishment?"

The walls became like red-hot bricks. This was quite unexpected. The generals shouted and shouted, but they did not understand why, why the walls had suddenly become like this.

They really can't think of any other explanation than the divine punishment of Allah, the great.

A hot wave of heat rushed to the face, making people feel suffocated.

Yusuf's eyes sparkled, staring at the reddened city wall, his brows furrowed, and his thoughts turned. immediately figured it out, and yelled: "Zhang said!" Okay, you scheming Zhang said! ”

"Your Excellency. What does this have to do with Zhang Shuo? "There are generals who don't understand.

The city wall turned red, like bricks being forged, which had something to do with Zhang Shuo.

"This is what Zhang said set on fire." Yusuf's eyes were full of hatred.

"Your Excellency, wouldn't you? Set? How could we not have found fire? "The generals looked around for a long time, but there was not a trace of spark, how could they set fire?

"He put the fire in the ground, how can you see?" Yusuf is Yusuf, and he quickly thought it through, and said: "He didn't dig a hole to sneak attack, but to set fire to the city wall." ”

These words are too incredible, far beyond the thinking of normal people, and the generals are directly petrified.

Even Muhammad, who had always been resourceful, was puzzled and confused.

"Bricks, they are fired in a furnace. Zhang said that digging a hole in the ground is to make a brick furnace into the underground in this area, and he only needs to put a fire, and the city wall in the north of the city is brick. Yusuf explained.

It's okay if he doesn't explain, but as soon as he explains, the question comes.

"My lord, this can't be, right? To burn bricks, you need a lot of firewood, where do the Chinese get firewood? "Some generals thought about the problem of fuel.

They've all seen bricks, and that requires fuel. Even if Zhang said that the city wall in the north of the city was burned as bricks, it would require a lot of fuel, where did Zhang say to find so much fuel?

"If you think about it with your stupid pig brain, Zhang said that all you need to do is pour the fire oil in the hole in the ground, and then drive the cattle and sheep into it, and it will be enough to burn the city wall in the north of the city like this." Yusuf couldn't wait to slap this mouthy general a few times.

Yusuf was right, Zhang said that digging a hole in the ground is to turn the entire northern area of the city into a furnace for burning bricks. In the cave of the earth, they poured the fire oil, which was used to ignite the fire, and without this fire oil, it would be difficult to burn the cattle and sheep. Cattle and sheep are fuel.

Because cattle and sheep contain a lot of fat, flammable, burn-resistant, and are good fuel.

"This ...... The Chinese are really treacherous! The generals who understood it were stunned for a moment and exclaimed in unison.

Zhang said that this hand was unexpected and had to be shocked.

"My lord, even so, we don't have to be afraid. The walls are red, we can't stand on them, and the Chinese can't attack. "There are generals who don't take it to heart.

"You're stupid! Stupid! Yu Sufu roared loudly at the general and shouted: "This is just a move by Zhang Shuo, and his back hand will be there immediately." ”

As if to make a note of Yusuf's words, as soon as his words fell, a black and oppressive thing smashed on the reddened city wall, and immediately broke out with an earth-shattering "bang" sound, and in a white mist, countless broken bricks and stones splashed indiscriminately.

"What do the Chinese use for this?" The generals looked at the "spectacle" in front of them and asked puzzledly.

"Water." Yusuf's answer was unusually succinct.

"Water?" The generals were confused.

Yusuf's answer is completely correct, it is indeed water. Because red-hot stones and bricks will crack when exposed to water, which will speed up the destruction of the city walls.

As the water continued to be smashed in, the walls were destroyed more and more rapidly, at first only in small pieces, and then in large pieces.

Later, cracks appeared. (To be continued......)