Huo Yi did not understand the intention of the Shu army at first, but immediately he thought about it and realized it.

The Wei army filled the moat in the west of the city and opened a path to siege, but that was only one. If the Wei army wanted to siege the city, it had to launch an attack from the west of the city. Other directions were impossible, so for the defenders, the task was relatively easy. They only needed to defend the West City Wall.

In this way, the difficulty of the Wei army siege will increase significantly, so the Wei army gave up the plan to directly attack the city and continued to fill the river. It seems that the Wei army will not launch an attack before filling all the moats.

Once the Wei army filled all the moats in four directions, they undoubtedly had the possibility of attacking Wei County from all directions. In this way, when the Shu army defended the city, they could not mobilize the defenders in other directions as they are now.

Because they could not judge where the Wei army's attack was a force attack or a feint, when the Wei army attacked, the defenders in other directions did not dare to act rashly, otherwise if there was a mistake in judgment, the consequences would be extremely dangerous.

The way the Wei army filled the moat was to continue to use the same shield square array as yesterday. Obviously, the Wei army had already enjoyed the benefits and could achieve the established goal at a very small cost of casualties. It was obviously a matter of benefit without any expense, so why did the Wei army do it?

Seeing this, Huo Yi frowned. It has to be said that although the method of filling the river by the Wei army seemed rather vulgar, it was the most practical and economical. In terms of the speed of filling the river, it was slower, but the price of almost zero casualties was impossible for anyone to refuse.

But the defenders were completely helpless. They had no choice but to use the Wei army's square formation. They could only look at the Wei army step by step to fill the moat. Although the Shu army was so angry, no one could find a way to restrain the Wei army.

In fact, there are many ways to deal with this kind of shield phalanx. Since Huo Yi, who has extraordinary strength, uses three stone bows to shoot through the shield, if the Shu army is equipped with a bed crossbow with stronger power and longer range, it can easily destroy the Wei army's shield phalanx.

Similarly, if the Shu army could be equipped with a more powerful catapult, it would be even simpler to destroy the shield formation. Wherever the flying stones arrived, the shield formation would immediately collapse and disappear, and the army would be destroyed.

Unfortunately, the Shu army never had these two weapons. Because the roads in Shu were difficult to move, the Shu army used most individual weapons during the Northern Expedition, and the most powerful one was the Yuanrong Crossbow.

It is not that Zhuge Liang could not design more powerful weapons, but because of inconvenience in transportation, Zhuge Liang considered designing a single weapon such as a crossbow and gave up the bulky crossbow chariot.

As for the catapult, it was not a dish of the Shu army. In addition, Shu was originally poor in resources, and the cost required by a large number of equipment was often huge. Therefore, the Shu army only focused on individual weapons and ignored the production equipment of heavy ordnance.

Even the Nanzhong army, which could not even be equipped with Zhuge's crossbow, naturally was even less likely to have weapons such as catapults and crossbows. The Shu army lacked its attack ability and could only watch the Wei army fill the moats one by one, but they did not have any countermeasures.

It took the Wei army a total of four days to fill the moat on the southwest and northeast sides. After all, filling the river is a hard work. Every night, the Wei army had to prepare tens of thousands of sandbags in advance and fill them with soil. Then, under the cover of the shield array, the sandbags were passed from the back row to the front and put them into the moat.

These Wei soldiers who delivered sandbags were not easy, but what was even more difficult were those Wei soldiers who held a shield. Although one shield was only twenty or thirty kilograms, it was not light or heavy, but it was used in daily combat, as it was now, as it was now. Not to mention raising the shield, even if you held a leaf up and held it like you would be able to stand it like this all day.

However, Wei Jun and the sword and shield soldier kept holding the shield. When they were sleepy and tired, they just changed their arms. No matter what difficulties arise, the shield must be raised high.

Although the Wei army implemented a rotation system in order to avoid the sword and shield soldiers being too tired for a long time, it replaced half of the sword and shield soldiers every hour, even if they held the shields for two hours, it was a torment for the Wei army's sword and shield soldiers.

This is the time to truly test the willpower of the Wei army. However, the infantry battalion and Changshui battalion are both elite forces among the Wei army's infantry. They are not afraid of sacrifice, nor are they afraid of hardship. For four days in a row, they all took down with their tenacious fighting spirit and unyielding will and successfully completed the operation of filling the moat.

Zhang Tong was patient enough to attack Wei County. Logically speaking, if the Wei army wanted to attack the city, it was enough to fill the moat on one side. However, after Zhang Tong filled the moat on the west, he did not rush to organize the army to attack the city. Instead, he spent more effort and more time to fill all the moats in the other three directions.

Zhang Tong had his own arrangements for this action. According to the prior exploration, Zhang Tong believed that the city defense of Wei County was not simple. If the Wei army attacked violently, they would definitely encounter stubborn resistance from the Shu army, and the casualties of the Wei army would become very large. If they killed one thousand enemies and suffered 800 damage to themselves, Zhang Tong would obviously not be happy.

Therefore, when siege, Zhang Tong seemed to be unhurried. After filling the west side of the moat on the first day, the Wei army was very excited and ready to attack. However, Zhang Tong did not order the siege, but asked them to continue to fill the river until they filled all the moats on all sides of Wei County.

Perhaps it was difficult for the Wei soldiers to understand, but Zhang Tong's idea was extremely clear. After all, it was feasible to launch an attack on Wei County, but it would become easier for the defense of the Shu army. They only needed to concentrate their troops to defend the Western city wall without worrying that the Wei army would launch a surprise attack from other directions.

Such a battle will be fought on the surface. Although the Wei army has an advantage in military strength, the Shu army has a good position. If both sides do their best, the Wei army may not be able to get much advantage.

After filling the moat on all sides, the Wei army had a variety of choices, whether it was a feint or a real attack.
Chapter completed!