That night, a heavy rain suddenly broke out, and it was late at night, but there was still no intention of stopping. Suddenly, a huge thunder and lightning sounded, awakening Qingcang.

At the same time, the guards' voices were heard outside the door, and the guards' voices seemed very rapid. It seemed that something must have happened.

"The commander is not good, the commander is not good!"

As soon as Qing Cang opened the door, a guard rushed in with wet all over, his expression was panicked...

"What happened? So panicked?"

The guard agreed: "The sudden rainstorm has been going on tonight for more than three hours. Now the water level of the moat has risen rapidly, and the water surface is only four feet above the ground! The water level is still rising. Minister Wang ordered me to come and ask the commander, saying that emergency measures must be taken, otherwise the river water will inevitably flow backwards and will directly damage the city wall. He said that there will be some damage to the suspension bridge."

Four feet is already very close to the height of the ground, and this height sends a dangerous signal.

Once the city wall is soaked in water, it will inevitably be damaged. When the enemy is in front of him, he must prevent this from happening. During flood control and disaster relief, he has supported the disaster area many times, and was once appointed as the team leader, commanding hundreds of soldiers to fight against floods and disaster relief as the team leader. Therefore, he knew very well how to deal with floods.

"Let the entire army be on standby! Summon all the military generals and literati in the city and gather at the meeting hall immediately. I want to organize disaster relief and rescue."

This matter is so big. Don’t let the enemy fall down before they come to their own walls. Everything will be in vain. Ancient building materials did not have cement. Most buildings will suffer major or minor damage when they encounter rapid water. If one of the city walls collapses, it will cause a chain reaction. At that time, the city wall will be destroyed without attacking. That’s a big blow. Without the protection of the city wall, the Chinese army will have to make a tough quarrel with the enemy and will inevitably lose a large number of soldiers.

The guards immediately went down to call everyone in the main city and some generals in the military camp.

After a while, the entire convention hall was bright and Qing Cang's expression was solemn. Everyone was present. Even Wang Zongwei hurried back, waiting for Qing Cang's dispatch.

At this time, the heavy rain was still falling, and the sound of clamor was clamoring. Fortunately, the previous paper machine was carried onto the high platform and covered with a movable greenhouse, so it didn't touch any water, otherwise he would cry because it took a lot of health points to be exchanged. Without it, paper money could not be created, and the entire economic circle might be in chaos.

Qing Cang said, "Wang Zongwei, tell me what the situation is now?"

"Return to the commander, the heavy rain continues and the water level rises sharply. Within an hour, the power will flood the moat. If you don't respond in time, the water will spread to the foot of the city in just one hour. I'm afraid that once the water erodes, it will cause huge damage to our city walls."

“Where does the water flow come from?”

"Because the terrain of the West Gate is higher and the north side is lower, all the rivers go to the north gate, so the danger at the north gate is the greatest. There are also many waterways in the city that are drained to the moat, and the dangers at the other three gates also exist."

According to Wang Zongwei's point, Qing Cang slashed on the sand table.

Guo Jia gave advice: "I think the water is coming quickly. The problem must be solved from the source and the water is directed elsewhere. In this way, the problem will be solved."

Qing Cang agreed. "Well, this suggestion is feasible."

"It's just that I haven't figured out how to dig a traffic flow. Maybe we can mobilize the army to dig a canal and dig a traffic flow?"

The source of the moat is under a mountain spring, and the water is also drawn from there, so Guo Jia means to start from there.

After all, Wang Zongwei is already very familiar with the project, so his words are very realistic. He said: "It is very difficult to dig a channel in one hour, and because the water flows, it may put the army in danger."

People suddenly fell into anxiety, what should I do?

Everyone discussed: "Then you have to do something."

"If the entire army goes out to dig channels, it should be able to complete it in a short time."

"No, this is not a matter of number of people. No matter how many people you have, the width of the channel is limited, and the number of people you can accommodate is limited. Although the efficiency can be improved, the scope of improvement is still limited. Minister Wang said that one hour is still not enough."

"What should I do? It's so anxious!"

Everyone had no choice but to put their hope on Qing Cang.

"The commander must have a way! Right!"

"Yes, the commander can think of anything we can't imagine. He must have a way."

Qing Cang had been thinking about other questions just now, but at this time, he finally spoke, and the whole audience became very quiet.

"Teacher Zhao, you bring 50,000 people to fill the sandbags. The more sandbags, the better. Commander Zhang, you lead 30,000 people to the source of spring water to dig channels, the faster the better. The purpose is to lure the water away. I will take the lead in the remaining 30,000 people. Minister Wang, please help me to transport the sandbags to the West Gate."

Zhao Zilong, Zhang Liao and Wang Zongwei should be!

Then someone asked, "Commander, what is the use of sandbags? Why don't we directly solve the problem at the source?"

Qing Cang gestured on the sand table and said, "Stacking sandbags together can increase the height of the river embankment and increase the water storage level to prevent water from flooding into the city. Like this! But it can only be temporary. If the water is larger, the effect of the sandbag is zero."

At first, everyone looked very seriously and didn't understand it. Later, he gestured at the stacking method of sandbags, and everyone understood what he meant.

In the introduction to civil engineering, it is said that earth and rock dams are most afraid of flooding the dam. The water flow brought by flooding will take away the earth and rocks on the dam surface. As the soil and rocks are wet and reduced, the bearing capacity of the dam surface will decrease. It will increase the chance of pipe surges. Once a pipe surge occurs, the earth and rock dam will collapse quickly. The river embankment is also a kind of earth and rock dam. A sandbag has an important function to strengthen the dam and prevent flooding the dam. It has a certain function to increase the height of the river embankment, but the above things are too profound and he said that everyone cannot understand. It is better to talk about a relatively simple principle.

So someone asked: "How long can the commander last?"

"At most one and a half hours. It's not too late, you can take action!"

With this kind of addition, it will take two and a half hours to flood the city wall, five hours, and it will be dawn at that time. It should not be difficult to dig a small channel in five hours.

Zhao Zilong and Zhang Liao took the orders and took the generals from their troops to their respective destinations. Bai Yu and Twelve were not in a hurry because they had just entered the military camp. They reacted in time and joined the nervous rescue with the two masters. Because this would be their excellent opportunity to perform.

Wang Zongwei and Qing Cang together, Qing Cang must be the commander-in-chief this time. In addition to doing a good job in emergency work, they can only pray that God can stop the rain.

(End of this chapter)
Chapter completed!