Before Haidongqing appeared, airships, grenades, and turbulent oil stadium combinations have always been the ace combination of escort combat.

The lethality of grenades mainly relies on iron sand. If it is not at the center of the explosion, hiding behind a shield or bunker can block the iron sand.

But the shield or bunker is difficult to stop the flames after the crater and oil altar breaks.

Moreover, the turbulent oil altar is simple to make and is also the flying fuel for airships and hot air balloons, so the logistics team carries a lot of turbulent oil.

The first target of the Dead Warriors is also these turbulent oil altars.

Zheng Fang naturally knew this, so he sent another regiment to protect the logistics regiment, and the number of escorts responsible for the exploration of the way increased several times.

Before the army marched, not only would airships reconnaissance in the sky to prevent large-scale ambushings, but the studs who explored the way would also stab all the snow on the roadside with a spear to prevent people from hiding inside.

The Qin King's counselors soon discovered this, so they no longer sent large-scale soldiers to attack, but instead sent elite dead soldiers to hide in the snow dozens of meters away from the mountain road, hoping to rush into the logistics regiment to set fire with the speed advantage of the dead soldiers.

Unfortunately, reinforcements were equipped with muskets.

No matter how fast the Death Soldier is, it is not as fast as the bullet.

The sneak attacks of the deceased soldiers ended in failure one after another until the King of Qin sent someone to send a mini catapult cart. The deceased soldiers hid dozens of meters away. When the logistics regiment passed by, the deceased soldiers used the mini catapult cart to throw a basket of turbulent oil into the logistics regiment's turbulent oil convoy.

When the hot air balloon was found in the sky, it was too late.

The sintered turbulent truck hit was blown up directly!

Fortunately, the logistics commander was prepared. In order to prevent a series of explosions, the sultry trucks were not gathered together, but spread out to travel. The blown sultry trucks only affected the grain trucks in front and behind, and did not affect other sultry trucks.

The burning sulphur truck and the grain truck were quickly extinguished, and the dead soldiers who set fire were also surrounded and killed by the bodyguard.

However, the reinforcements stopped and repaired for half an hour before they set off again.

The most terrible thing is that after the Qin King's counselor found that this method was easy to use, he repeatedly used it, making reinforcements unable to defend themselves.

Guan Xiaorou was so anxious that she jumped straight away, but she had no choice but to order the airship to find the suspicious location and throw two grenades over first.

The reinforcements were not going well, and the situation in the brass ditch was even more dangerous.

The day after the general attack began, the King of Qin sent people to send Chen Anjie and Li Lingrui a batch of heavy crossbows and catapults.

A small part was taken away from the Zhenyuan Escort Agency before, and most of them were imitated by craftsmen under the King of Qin.

I won’t talk about the part I took away. Although key parts need to be replaced after using it for a period of time, before replacing the parts, these heavy crossbows and catapults were the same as those used by the Shu army, and could be completely bombarded against the Shu army.

But what made Jin Feng the most headache was the catapult cart imitated by craftsmen in Qin.

In fact, the principle of a catapult is very simple and it is not difficult to imitate.

Although the catapults imitated by the craftsmen in Qin are extremely large and bulky, and they are difficult to assemble and move, and their firing rate is very slow, their counterweight is more than twice that of the taxpaulin of the Shu army.

The counterweight has increased, and the range and throwing volume have also increased!

Jin Feng has always advocated the combat concept of "eliminating the enemy on the offensive road". In the past, when fighting, the Zhenyuan Escort Agency had the advantage in range, but now it has suddenly turned around.

The enemy's catapult range exceeded that of one's own side!

Fortunately, it was not too difficult to increase the counterweight, so Jin Feng modified his catapult car overnight to barely stabilize the position.

But on this day, while the Southern Expedition Army attacked, it began to build walls again.

Now the northern end of the brass ditch has been filled with stones, and it has been approaching the fortifications of the Shu army.

The advantages of the hills on both sides of the ravine have been lost because of the stone walls. If the stone walls are allowed to be placed on the fortifications, the advantages of the fortifications will be completely lost.

Moreover, the fortifications were behind the Shu army camp. If the fortifications were lost, the Dangxiang soldiers would pour in like a tsunami.

Jin Feng, Zhang Liang and others thought of many ways but couldn't stop them, so they could only order the Shu army to build another fortification after the first fortification.

On the day the second fortification was built, the first fortification was lost, and the Shu army had to retreat dozens of meters to enter the second fortification.

But who knew that Li Lingrui did not stop, and the stone wall began to approach the second fortification again.

Jin Feng had no choice but to order the construction of the third fortification.

In this way, every two or three days, the fortifications of the Shu army need to move back dozens of meters, and the living space is also compressed by dozens of meters.

However, because there are many soldiers of the Shu army who have died recently, the per capita living space in the brass ditch is increasing.

In the past, the soldiers had to squeeze to sleep before they could sleep, but now the Datongpu has become significantly loose.

Many soldiers who slept on both sides yesterday would not come back today.

And as the battle continued, the bed became looser and looser.

On the twelfth day of the decisive battle, the Shu army had abandoned seven lines of defense and retreated several hundred meters, leaving only a few hundred meters in the center.

But this is not the worst, the worst is the casualty rate and ammunition reserves.

There is nothing that can't kill people when fighting, especially in this kind of hand-to-hand combat that requires a head-on battle, sacrifice is inevitable.

Although Jin Feng has been trying to find ways to preserve his strength and even kept retreating the defense line for this reason, after so many days of fighting, the casualties of the Shu army still exceeded 60%!

Even with the logistics team, the total number of people in the brass ditch is less than 20,000, and the ammunition reserves are consumed by more than 70% due to the previous bombardment.

Previously, clerks could also encourage Shu soldiers with words like "reinforcements are coming soon" and "reinforcements have brought a lot of airships and hot air balloons", but so many days have passed, and they have not seen the shadow of reinforcements. Not to mention ordinary soldiers, even many grassroots officers began to doubt whether there were really reinforcements.

If it weren't for the blockage of front and back roads and there was no place to escape, the Shu army might have already fled.

Although the soldiers of the Shu army are still insisting on resisting, their morale is getting worse day by day.

Especially after finding that the supply of grenades and tincture oil began to appear limited, morale fell to the bottom.

But at this time, Chen Anjie in the south temporarily stopped the attack and asked someone to shout outside the fortifications of the Shu army, saying that the target of the Qin King was only Jin Feng, and that the soldiers of the Shu army left now, so they could not blame him!

Not only that, Chen Anjie really made a way out.

The Shu army in Huangtong Valley not only had old escorts, but also many new recruits.

After fighting for so many days in a row, so many companions died, many of the new recruits' psychological defenses were almost defeated.
Chapter completed!