More than ten days later, a fortress near Yangxia, Chu State.

This is a typical fortress built by the Chu State in the Central Plains near the Song State in order to prevent the Mohist going westward to the Central Plains.

The edge structure learned from Si Shang was adopted, covering a large amount of soil to prevent artillery attacks. Each fortress was not large, with about two thousand to three thousand people stationed, equipped with copper cannons and muskets.

There are four such fortresses around Yangxia. The location of Yangxia City is very important, so the Chu State built a very strong city here.

To the south of Yangxia is Chen, to the northwest is Xu, to the north is Daliang of Yuguan of Chu, and to the west is the important city of Chu in the Zhumadian area.

Now, part of the remaining vassal monarchs of Chu State is in the Chu army of Ye Fangbei Mo's family, and the other part is led by Grand Sima. In Chen Zhinan's bedroom, he threatens Cai Shouchun and other important Huai River towns.

After Duke Song announced his resignation of the title of marquis, Shi immediately led more than 10,000 cavalry, 30,000 infantry and a large number of engineers and artillery, and relied on the farm to supplement the civilians in the villages and cities in the western part of the Song Dynasty, directly surrounding the first Chu fortress near Yangxia.

This typical angular structure fortress in the gunpowder era consumed a lot of manpower and material resources from the Chu State. If it was improved, it would take half a year to siege it, and it would seem that it could hold the main force of the Mo family.

Because the main force of the Mohist school has a disadvantage, it has too much demand for logistics and too many artillery and cavalry, and it is impossible to move to the north and south with dry food like the peasant soldiers in the Spring and Autumn Period.

Therefore, unless the troops are strong enough to surround the logistics without attacking to protect the logistics, they must be taken down.

Therefore, the Chu State calculated this very accurately. This kind of base-building tactic can indeed hold back the Mo family, making the tactic of sneak attack and encirclement that the Mo family was best at before was invalid.

However, Shi had heard the stories of cats and tigers. Since he asked Chu, Wei and other countries to build such fortresses, he naturally had ways to deal with it.

After the army arrived, they immediately took the three-part attack on the Mo family.

Cavalry controls the surroundings of the battlefield.

Infantry weave wicker baskets to fill soil.

Artillery cover.

The engineer dug zigzag trenches to build a new artillery position near the fortress.

The fortress built by Chu State after learning from its lessons and experiences is not impossible to conquer, but this siege still requires a lot of casualties.

It is natural to use another method.

The biggest nemesis of the Gunpowder Age was the Flowering Bullet, because the soldiers needed to defend on the fortress.

The flowering bullet is too difficult. It is not that it cannot be made. It is because it is necessary to use soil and wax to seal the muzzle every time it is loaded. In short, it is very troublesome. Artillery soldiers don’t like it because it is very dangerous.

But the Mohist school has two things to replace.

Carpenters and mining explosives.

Sishang's technology has developed abnormally.

The original chemical industry methods have been established, such as acids, alkalis and supporting mining explosives industries; and technological progress in basic materials such as materials, cast iron technology, boring tools, etc., which require time to accumulate, are much slower, and this cannot be achieved quickly from scratch.

Just like electricity, it seems very high-end, should be far behind those primitive handicrafts. In fact, the difficulty of creating an original battery and an original rotor generator is a hundred times easier than creating a boring tool that can dig a practical steam engine, and is much less difficult than creating a cast iron process that can cast iron cannons... and even less difficult than creating a handicraft of a co-operated wide-width loom.

No matter which one is easy to defend and difficult to attack.

Danyang has the advantage of the navy, while Nanzheng has the natural danger of the Qinling Mountains.

The crisis on the Western Front originated from the Qin State's attack on Nanzheng and Danyang; while the Han and Wei coalition forces crossed Funiu Mountain to attack Nanyang through Lushan.

Only with the joint efforts of the three parties, the Mohist army stationed in Chu was under pressure. As long as one side was cut off, the other side would not be afraid.

On the Eastern Front, if this field legion in South Korea is destroyed and close to the field force of Qi, as long as the Mo family chooses to defend and retreat, the Qi army will not be able to break through the defense line on Si Shang.

He did not dare to go deeper alone, but the result was that he did not dare to attack Si Shang, but could only choose to attack Wei for profit.

The most powerful battles of the northern princes are Qin and Qi, but the position on Si determines that Qi and Qin cannot move forward from east to west. The key is that they are in the middle, and can connect Qi and Qin to form a mutually supportive Han and Wei.

The State of Wei was abolished. As long as South Korea sent troops, it was appropriate to seize the opportunity to annihilate the field army, then the Korean army was unable to support the Qin army on the western front. Qin Jun chose to confront the Mo family in Danyang and had no chance of winning; South Korea had to defend and march with Qi on the eastern front, and Qi itself dared not attack Si Shang.

In this way, the alliance of princes has collapsed before it was established, and there is no need for a real decisive battle.
Chapter completed!