Du Wenlin led two thousand guards to travel with the troops of Yan'an Prefecture. His duty was still to protect the safety of the Mei Supervisor Army.

Yan'an Prefecture gathered the garrison troops from Minzhou Guard, Songpan Guard, Longzhou Division, Pingliang Prefecture, Qingyang Prefecture, Fengxiang Prefecture and other places, with the number reaching 100,000.

The flags covered the sky and the sun, marching all the way to the west in a mighty and mighty manner.

The wind and sand in the frontier fortress make us grow old. We have only been here for two months, and the two girls are completely different from when they came here. They are both dark and thin.

Du Wenlin looked at the two girls who were by his side without a word of complaint. He felt guilty in his heart. He always felt that he owed them too much.

He tried to persuade them to go back, but to no avail and they didn't listen to him at all.

"If you stay here forever, we will stay with you forever." These were Wang Ling's original words.

It's not that they don't understand their feelings, but they can never face them, let alone accept them.

Because Cuizhu has been waiting there silently.

On the 23rd, the troops arrived at Dingbian.

Ma Gui had been waiting in the garrison for a long time. When he saw the governor and the supervisors arriving, he immediately came out to greet them.

Li Rusong's troops have arrived in Yongning County, and he is in a position to attack at any time.

Ye Mengxiong ordered Ma Gui to lead his troops to set off immediately and rush to Helan County at the foot of Helan Mountain in the north of Ningxia City to wait for the attack order.

Yun Qianhu also took the defenders from Dingbian and rushed to Helan County with Ma Gui.

On the 25th, Li Rusong took the lead in launching an attack on Ningxia City from the south gate.

More than 70,000 people were divided into several echelons and took turns to attack from morning to evening. Apart from leaving more than a thousand corpses, nothing was gained, so they had no choice but to withdraw their troops.

The next day, Li Rusong still attacked the south gate, Ye Mengxiong's three-sided troops attacked the east gate, and Ma Gui attacked from the north.

The entire city of Ningxia was surrounded by artillery fire, and the shouts of killing were earth-shattering. There were siege ladders everywhere on the city wall. Soldiers climbed up the city wall in groups, and were chopped down one by one and thrown down.

The ground was covered with soldiers shot to death by bows and arrows on the battlefield. The soldiers who died in battle were piled into a hill under the city wall.

Kuaibai personally climbed up to the east gate to supervise the battle, and personally cut down several Ming troops who climbed onto the city wall.

Gui Chengen was in charge of commanding the south gate, and he was as tenacious as his father. He led the guards on the city wall to support the breached gap.

The defenders at the north gate were Han troops led by Xu Chao. Although their combat effectiveness was not as good as that of the Tatar soldiers, their large numbers made Ma Gui helpless.

After a day's attack, the Ming army lost no less than five thousand people, but the city of Ningxia was impregnable.

At night, the governor's Chinese army tent was brightly lit, and Li Rusong, Ma Gui and other senior officers were there.

"Tomorrow I will push all the troops up, I don't believe I can't open the gap." Li Rusong gritted his teeth.

Ma Gui also said that he would increase the intensity of the attack tomorrow and vowed not to withdraw his troops until the city wall was breached.

"Such a reckless move is not an option. Not only will we lose too many soldiers, it may not be effective," Mei Guozhen said.

"Mei Jianjun, what do you think we should do?" Li Rusong said with red eyes.

"Sun Tzu said, 'Victory in a hundred battles is not a good thing. It is a good thing to subjugate the enemy's troops without fighting.' Now, the enemy's city is strong and the artillery is strong. They are waiting for work at leisure, and they have taken advantage of the time and place. However, we use our troops to work far away.

"What are the chances of winning if a tired army attacks on its own?" Mei Guozhen asked again.

At this time, Ye Mengxiong cleared his throat and everyone fell silent.

"The attack will be suspended tomorrow. Let's study the attack method carefully. The Ningxia Guard has been built since Taizu founded the dynasty. After more than a hundred years, the city walls are strong and the warehouses are sufficient. Now there are more than 100,000 tiger and wolf troops defending. If

If you just attack blindly without paying attention to strategy, the ultimate loss will be unimaginable." Ye Mengxiong said.

Li Rusong, Ma Gui and other military leaders were silent. They knew that Governor Ye was right.

"Tomorrow I will go around the city of Ningxia with everyone to see if there are any good solutions. The battlefield situation is ever-changing, and the best policy is to be flexible." The last trip to Ningxia was aborted because of the border issue.

I haven't forgotten this.

The next day, Du Wenlin led two thousand guards to follow Ye Mengxiong, Mei Guozhen and his party headed towards the north of Ningxia City.

The Yellow River flows through Helan County. This is the upper reaches of the Yellow River. The water flow is not fast, but the water volume does not decrease all year round and winds down.

The crowd followed the Yellow River all the way up, going higher and higher until they came to the northwest of Ningxia City and stopped.

Ye Mengxiong stood on the edge of the quietly flowing Yellow River, looking back at Ningxia City more than ten miles away, thinking for a long time, and suddenly said:

"This place is much higher than Ningxia City. Can we divert the Yellow River water there and flood Ningxia City?"

Everyone looked surprised when they heard this.

Because the water source here is the Tianhe River high above the city of Ningxia. If the Yellow River water is diverted and cascades thousands of miles away, it will definitely cause great harm to the people in the city.

It is difficult to say whether the siege will be effective.

Therefore, when Ye Mengxiong raised this question, everyone was silent.

If the people in the city were destroyed but Ningxia City was not captured, who would bear the responsibility?

Seeing everyone's attitude, Ye Mengxiong said nothing more and ordered to return to the military camp immediately.

It seemed that he had already made up his mind on the water attack.

Taking advantage of the free period of the war, Du Wenlin wanted to go to Ningxia City to spy on intelligence in person.

Ye Mengxiong said that it would be best to get a structural diagram of Ningxia City.

This is the third time he has entered Ningxia City. Du Wenlin is dressed in silk clothes, looking like a rich little boss.

Wang Ling and Rong's daughter and daughter dressed up as men, wearing coarse cloth clothes belonging to servants, and became servants.

They first went to find the scouts who had been installed, and the newly opened "Zhongjia Grocery Store" in the center of the city was one of their meeting points.

Boss Zhong is in his forties, a shrewd and agile man, and he was also a scout who was just hired some time ago.

The three of them found Boss Zhong and explained their mission to him.

After listening, Boss Zhong pondered for a long time, feeling a little confused:

"Time is tight. Where can we get a map at once?"

Du Wenlin also felt that it was a bit difficult for him to complete this task.

Perhaps Boss Zhong felt that it was difficult to save face, so he added:

"The General Military Mansion in Kuaibai and the Governor-General's Mansion in the Xu Dynasty must have the city defense layout map of Ningxia City."

Du Wenlin cursed secretly:

"Aren't you talking nonsense? Who doesn't know there are maps of these two places?"

But then again, apart from these two places, I really can’t think of anywhere else.

After thinking for a while, he said:

"You help prepare three sets of night clothes, and I will go to the Governor's Mansion in the evening."

Boss Zhong was a little stunned, so he just said this casually. He didn't expect that this young man was really going to pull out a tooth from a tiger's mouth.

"Master Du, this is a time of war, and the Governor's Mansion must be extremely guarded. Isn't it too risky?"

"If you don't enter the tiger's den, how can you catch the tiger's cubs? Now that you're here, you can't go back empty-handed."

Boss Zhong couldn't say anything else and agreed to help prepare night clothes.

After lunch, Du Wenlin and the other three rested in the guest room behind the grocery store to recuperate and prepare for work in the evening.

"Don't follow me tonight, it's too dangerous." Du Wenlin said to the two girls.

"What do you think, can we rest assured that you are in danger alone?" Wang Ling replied.

Ronger pursed her lips:

"Doesn't that mean you didn't say anything?"

Du Wenlin sighed secretly, feeling an additional layer of guilt in his heart.

One is a girl in her prime, and the other is a girl who is underage. They follow him into danger again and again, throwing life and death behind them every time. How can I repay this kind of life-and-death relationship?

I even began to regret that I should have insisted on keeping them in the capital in the first place.

Now, I am burdened with a heavy love debt to them. No matter how I go in the future, I am afraid that I will never be able to repay it in this life.

Thinking of this, I couldn't help but feel sad.

The "Shaanxi Governor's Mansion" is heavily guarded, with a post every three steps outside the wall and a sentry every five steps outside, let alone inside the wall.

Du Wenlin and the three of them were all dressed in black night clothes and black scarves, and quietly sneaked to the wall behind them. Taking advantage of the gap just passed by the patrol team, they threw out the grappling hook rope, climbed up the two-foot-high wall, and entered the yard.

It was already midnight, but the torches were still brightly lit in the courtyard, and patrolling soldiers came and went.

The three of them crouched down and approached the hall under the cover of flower trees and rockery.

There were only two guards standing guard in front of the hall door. Du Wenlin signaled to Wang Ling, and they both jumped out at the same time, slashing the back of their heads with his palms. The two guards fell to the ground without saying a word.

Wang Ling and Ronger were guarding the door. Du Wenlin pushed open the hall door and rushed in quickly.

The room was pitch dark, but Du Wenlin's eyesight was unusual for ordinary people. Moreover, he had been to this hall before and was very familiar with the furnishings.

Go straight to the filing cabinet near the north corner. This is the only place in the entire hall where documents can be stored.

Suddenly, a burst of laughter came from outside the house:
To be continued...