This time, the soldiers of the new annex army did not stop far behind like last time, but followed the people to a distance of 200 meters, and then stopped to set up a shield formation. The men filled the trenches in front of them, while they cowered behind the giant shield array to supervise the battle. In order to prevent being hit by artillery, they all wore armor this time, different from the leather armor of the Mongol cavalry archers, these armors were made by the newly attached soldiers in the entire battalion, both iron armor and leather armor, and the most was the paper armor equipped by the Song army. Seeing that the people were coming to fill the trenches, Cao Ergou ordered the Perak soldiers to shout and persuade them, trying to make the people flee to the mountain pass. Only this time, no matter how the wall shouted, the people refused to run away. Although their faces turned pale with fear, they no longer flinched, but desperately filled the trenches. What the Perak soldiers didn't know was that the reason why the people who filled the trenches didn't run away was not because they didn't want to, but because they didn't dare. In order to prevent escape, the men brought by the new annex army this time were carefully selected, and one of them was selected from the fathers and sons or brothers in the camp, and the other stayed in the rear camp to work. If one escapes, the other will be killed on the spot. Not only did the chosen man not dare to escape, but he also worked extremely hard, because the Mongols promised that as long as the trench was filled, he would be able to work in the safe rear with his relatives.

Cao Ergou saw that it was useless to shout, and saw that the soldiers of the new annexed army were hiding behind the giant shield and shouting to supervise the battle, so in a fit of anger, he asked people to replace the shells with solid shells and fired at the giant shield array. After the previous shelling of the new annexed army, they found that the unarmored ones were much more seriously injured than the armored ones, and even found that many shotguns the size of beans and wheat were stuck in the armor and shields, and did not hurt the flesh, so they thought carefully. The armor and the tall and thick shield on his body gave the soldiers of the new annex a high sense of security. It's just that with the sound of cannons at the head of the city, their sense of security has become illusory. Solid fiery bullets flew in, easily smashing the giant shield and body that stood in the way, and rolled forward with the scorching aftermath.

When the men saw that the new soldiers who were supervising the battle in the rear were shattered, they also fled back to the camp in a hurry, but they were driven back not long after they fled. The new annexes of the battle were still two hundred meters away, but they did not carry a giant shield, but a flesh shield—a large number of civilians standing beside them. After two rounds, these two devils understood a truth, that is, the Thunderbolt Army treats the people as real human beings and will not be easily harmed.

The new annex drove some of the men to fill the trenches, while some of the men dug ditches on the spot at the battle overseer. After the trench was dug, a large number of logs were brought in from the rear to form a fence. After the fence was erected, the excavation began. Cao Ergou looked at the shallower and shallower moats but had no choice, he really couldn't give the order to fire cannons and bombs at the people. In desperation, he sent someone back to Wanjiaping to ask Ouyang Xuan for instructions. Before the Mongol invasion, Ouyang Xuan entrusted the task of defending Hengyuan Fort to Cao Ergou, and he stayed in Wanjiaping. On the one hand, because from the tactical level, Cao Ergou is much higher than his own level, and staying in Wanjiabao will interfere with the command, on the other hand, the scientific researchers of the research institute are still waiting for their own guidance, and they are currently trying to make glass production methods. Regarding Cao Ergou's request, Ouyang Xuan only replied with four words: "Act cheaply."

Cao Ergou, who got a reply, discussed with his company commanders for a long time and decided that he could no longer let the people fill the trenches. Since the people don't listen to the shouts, the Thunderbolts don't need to be polite. It's just that Cao Ergou didn't kill him, but just ordered to be smashed with a small stone. Although these people were smashed with blue noses and swollen faces, they still did not stop. They did not dare to stop, because the Mongols had already said that if they did not complete the mission, their relatives in the camp would die.

Cao Ergou thought in his heart, if he didn't solve the problem of the supervising team, it was estimated that the people would not dare to retreat. At this time, at 200 meters, a long row of log fences had formed in the hiding place of the new annexed army, and the personnel could be vaguely seen walking around behind. When the people were erecting the fence, Cao Ergou did not order the shelling. Because of the constraints of technology, it is quite good that the Thunderbolt artillery can hit the target at this time, and it is simply impossible to accurately hit the new annex of the overseer without harming innocent people. Although the logs of the fence are as thick as the mouth of a large bowl and cannot be destroyed by non-large siege weapons, they are not strong in the face of solid shells. It's just that it is a dilemma to ensure the safety of Yokohara Fort and not want to accidentally injure the people. If the people were allowed to work in the fields, they would put Yokohara Fort in danger, and the loss of Yokohara Fort would put tens of thousands of people in the mountains in danger. At this moment, it had to be bombarded. Didn't Brother Xuan say the phrase "There must be both thunder means and bodhisattva hearts"? Although the Buddhists said that all beings were equal, the Mongol soldiers were demons, and the soldiers of the new annex army were the most vicious accomplices, and these people, although they were coerced, also posed a threat to the Thunderbolts, and they were about to fill in the trenches and build wooden fences as long as the south side of Yokohara Fort. For the safety of the Perak soldiers and mountain people, I really can't care too much. Cao Ergou sighed heavily and gave an order: "Knock down the wooden fence."

A row of solid bounces bounced over, and the wooden fence was blown to pieces, debris flew everywhere, and wails rang out. The people who were filling in the trenches also turned around and fled. It's just that after the smoke of gunfire, Cao Ergou found that although the wooden fence had been blown down, it exposed a thick earthen wall. It turned out that the new annex army drove a large number of people to join them, not just to use them as meat shields, but to dig and build earthen walls, and the wooden fences were not used to defend against artillery fire, but to block the view, so that they could secretly build earthen walls. Although these earthen walls were built in a hurry, and some parts were not yet completed, the defensive artillery was more effective than the stone walls. Due to the thick and damp soil in which the walls were built, many shells were simply embedded in them, and only solid shells from heavy guns could penetrate them. The shivering new annexes hiding behind the wall were not hit by shells, but most of the dead and wounded were wounded by fragments of the fence flying everywhere.

Seeing that the earthen wall could deal with the Thunderbolt artillery, the new annex army no longer drove the men to fill the trenches—and they were almost done—but drove the men to build and strengthen the earthen walls. The Mongols did this for no reason, and it is estimated that there will be a big move next, thinking of this, it made Cao Ergou a little panicked in his heart, so he ordered to bombard the earthen wall. It is said that although this earthen wall is thick, it will definitely not be able to withstand the artillery fire, and it only takes a few hits to collapse to the ground. It's just that it didn't take long for the new annex army to drive the people back on. After a few rounds of artillery bombardment, it did not kill or injure many new annexed troops, but it did hit many people, but it did not affect the construction of the wall. The Mongols obviously did not care about the death or injury of the people. "As soon as the cannon sounds, there are ten thousand taels of gold", it is said that although the Thunderbolt army can produce it by itself, the artillery is really a gold-swallowing beast, and ammunition is also a huge expense. Especially now that the production capacity has not been able to be raised for key reasons such as nitrate, Ouyang Xuan has repeatedly emphasized that we should pay attention to saving and use good steel on the blade. Cao Ergou thought in his heart that this bombardment of the earthen wall was really not a cost-effective deal, so he ordered the shelling to stop. On the one hand, he wanted to see what the Mongols would do next, and on the other hand, he also sent people to petition Ouyang Xuan's suggestion.