On the noisy city wall of Mushroom Valley, long stones weighing hundreds of catties were constantly transported up to the higher and higher city walls in the shouts of hundreds of young people, and then they were stained together under the action of clay mixed with a large amount of rice milk.

It is made of long stones and rice slurry clay, and after the two-foot-thick wall bricks are completed at a certain height, a frame of clay dug back from the deep mountains is quickly poured between the two wall bricks, and the layers are compacted.

In this reciprocal process, the two-mile-long wall expands outward every day at a speed visible to the naked eye.

On the first line of the city wall of Mushroom Valley, thousands of young people are busy back and forth. About a kilometer away from Mushroom Valley, in the completely deserted farmland, fifty Tartar cavalry galloped back and forth across the flat wasteland as if to show off their might, monitoring the movements of the Tiger and Leopard Army at Mushroom Valley.

In the face of the Tatar cavalry coming and going like the wind, even if there are dozens of artillery pieces hidden in Mushroom Valley, these Tatar cavalry can't help it.

Just when Wang Feng was holding back his anger because of this incident, Wei Zheng with the musket battalion finally came to Mushroom Valley. Let the morale of Mushroom Valley, which was getting lower and lower because of the arrival of the Tartars, instantly become high.

In the spear battalion commanded by Wang Feng, the proportion of veterans of the former Haw Par Army is the largest.

Under the leadership of these veterans, the entire spear battalion believed that as long as the general guard was recruited to Mushroom Valley, the Tartars would send multiple troops to attack them, and the entire Mushroom Valley could still be firmly in everyone's hands.

Entering Mushroom Valley, the first thing Wei Zheng had to know was the progress of the construction of the city wall.

Because whether the city wall can be built before the battle is directly related to whether he wants to use the city wall fortifications and consume a lot of Tartar vitality can be realized.

When Wei Zheng learned from Liu Jizhong's mouth, there was still a week to go, and the two-mile-long city wall could be built ahead of schedule. Wei Zheng's face quickly showed a complex expression full of surprise and solemnity.

Surprisingly, the wall will be completed five days ahead of schedule.

The worry is whether the Tartars, who have already discovered themselves, will give themselves five days to wait for the construction of the wall in front of them before attacking them.

Seeing Wei Zheng's constantly changing facial expressions, Wang Feng said at the right time: "General, just the afternoon before yesterday, after we repelled the Tartar attack, the Tartars left fifty cavalry to monitor us, and then led the rest of the cavalry to leave here quickly. ”

"If nothing else, the Tartars who left must have asked for help from their main forces. According to the speed of the war horses, at the latest yesterday at noon, the main force of the Tartars should know the news of our garrison in Mushroom Valley. ”

"If the Tartars want to destroy us in a short time, then the Tartars must have sent troops against us by now."

Wei Zheng replied in a deep voice, "In other words, the Tartars will definitely attack us before the construction of our city walls is completed. ”

Wang Feng affirmed loudly: "Yes, it will definitely be so." According to the marching speed of the main Tartar army, even if they have a large number of siege equipment, they can reach the outside of Mushroom Valley in three days at the latest. “

"If the main Tartar army didn't carry siege equipment, they could have arrived at Mushroom Valley a day earlier. When the time comes, the Tartars will surely attack us before our walls are finished. “

Hearing this, an unprecedented resolute expression quickly appeared on Wei Zheng's face, and he said in a firm tone to everyone: "As long as you hold on for five days, the city wall will be built." So, whenever the Tartars attack us, we have to make sure that the walls continue to be built until they are finished. ”

"The battle that is about to break out in front of us is definitely not over in just a few days, if there is no intact city wall to protect us, we will definitely not be able to hold the mushroom valley, and we will not even be able to hold the base in the mountains."

"Therefore, no matter how the Tartars attack us, we must ensure the safety of the city walls, protect the more than 1,000 young men on the city walls, and continue to build the walls."

Wei Zheng's words were categorical, and there was no room for negotiation.

However, Zhou Shuyuan, Wang Feng and the others who were standing in front of them frowned and fell into contemplation.

At this time, Zhou Shuyuan fulfilled his duties as a military advisor for the first time, and reminded Wei Zheng with a worried face: "General, there is a smooth road outside Mushroom Valley. If we abandon the walls and fight the Tartars outside the Mushroom Valley, we will be fighting a field battle with the Tartars. ”

"When the Tiger and Leopard Army was just expanding, I said that in all the battles between the Ming army and the Tatar cavalry, the Ming army, which had an absolute superiority in strength, did not once block the attack of the Tatar cavalry with firearms."

"Even the battle-hardened border army can't stop the Tartar cavalry in the field, not to mention us who have only been training for half a month."

"What's more, although we have a musket battalion, there are only more than 200 people who can actually participate in the battle..."

"With just over two hundred arquebuses to hold off the Tartar cavalry on the field battlefield, I don't think I have the ability..."

After Zhou Shuyuan finished speaking, Wang Feng followed closely and said: "General, I support the opinion of the military advisor, please think twice...."

Wei Zheng waved his hand, and said confidently under the gaze of all eyes: "Who told you that I am going to have a field battle with the Tartars....Besides, even if I plan to have a field battle with the Tartars, I am sure of victory, otherwise, I will definitely not let hundreds of soldiers die in the hands of the Tartar cavalry in vain..."

After speaking, Wei Zheng fell into deep thought, and began to think about the classic examples of infantry defeating cavalry in field battles after the invention of the musket.

Suddenly, Wei Zheng's tightly closed eyes opened suddenly, and after a fine light quickly shot out, he shouted excitedly: "Yes, we can build trench groups on the battlefield..."

"The group of trenches formed by one special trench after another slowed down the attack of the Tartar cavalry. And we have arranged our few firearms echelons to each trench to maximize the limited firepower. Eat the Tartar attacking troops little by little, and let the Tartars leave a few corpses behind for every step forward..."

"As long as the trench group is used to the extreme, you can definitely take advantage of the Tartar cavalry's underestimation of the enemy's mentality, give the Tartar cavalry a blow to the head, and make them pay a heavy price."

Seeing the puzzled expressions that quickly flashed on Zhou Shuyuan and Wang Feng's faces, Wei Zheng directly picked up a branch and drew a schematic diagram of the trench group on the ground......

More than a foot wide, three feet deep, and all the excavated earth was piled up on the opposing side, and a three-foot high retaining wall was formed three feet from the edge of the trench behind the two men.

The puzzled expressions on the faces of the two of them became even thicker...

As if they had discussed it, he asked Wei Zheng at the same time, "General, can this work..."