Guanghaiwei had a new thing, first the Acropolis was captured by a group of Japanese people, and then the Japanese went out of the city and fought several battles to repel the banner troops who rushed to help.

The surrounding people were still waiting to see the two banner armies under the city, and they heard that the banner army rode horses and scattered around the surroundings to inquire about where there were mining kilns and whose families had coffins, and they forcibly recruited hundreds of miners and several large coffins back that night.

Of course, gunpowder is also indispensable, the most taboo is that the gunpowder in your new club is pulled thousands of catties, and the spare gunpowder on the Fu ship also comes in handy, and tens of thousands of catties are made, but this Chen Ye still feels that it is not enough, and he boils wax and paints all night, and no one knows what he is painting.

Bai Yuanjie and Zhang Yongshou led their troops to make another feint attack in the evening, and retreated without engaging the battle, bringing back a long rope tied in a knot, the distance from the camp to the trench and from the trench to the root of the city wall.

The flag army felled timber and the miners started work overnight.

At first, the mountain lord was scared half to death by forced conscription, thinking that the flag army was letting them fight with the Japanese invaders, crying in the camp one by one and grabbing the ground, and later heard that it was just digging a big hole, and the construction started in ignorance.

"What does this mean?" Bai Yuanjie took Zhang Yongshou closer and bit his lip to look at the picture drawn by Chen Mu carefully, and couldn't see why, Bai Yuanjie pointed and asked, "This, is it the city wall?" ”

This style of stick figure painting, Bai Ye said that it is not easy to accept.

Chen Mu was pondering the principle of lifting the coffin and lifting the city, digging a big hole under the city wall and blowing it up with a bang, he could blow down the solid city wall several feet high?

Why did he feel so unreliable?

So his plan was not so simple, from the miners to dig the tunnel to the trench, so as not to be discovered by the Japanese while walking on the road, and then the trench to the city wall was only a dozen steps away, and the miners dug out three dirt tunnels separately, until the deeper place under the city wall, and dug out several adjacent large cavities apart, leaving the earth wall between the hollows to erect wooden pillars to bear the load.

When the time comes, the big hole outside is sealed and only the lead is left, and the coffin will blow up the load-bearing earth wall and wooden pillars, which will collapse the city wall, and the huge vibration will naturally shake off the wall bricks.

The amount of work is very large, and it will not be able to come down in a few days.

Xinning sent rice and grain the next day, and there was no need for Chen Mubai Yuanjie to send someone to urge.

Be wise, people!

"Coming from Xiangshan, the people of Xiangshan don't give rice grain, right? can come to Xinning to fight, and the people of Xinning must prepare rice and grain. Zhang Yongshou's eyes were slitted, he threw a peanut into his mouth with a smile, and said sarcastically: "When I want to fight, I want to fight the army, and I use us as bandits to defend against them, for fear of robbing them." ”

Chen Mu didn't know what to say, he smiled and didn't say a word, chewing in his heart and feeling that these words had a bit of flavor.

The family is poor and thinks of a good wife, and the country is in trouble and thinks of a good general, isn't this the truth?

It was Bai Yuanjie, who didn't speak, just drank the porridge a little faster, raised the wooden bowl and drank the rest of the white porridge, then put down the bowl and chopsticks and glanced at Zhang Yongshou, urging: "The military households eat food and go into battle to kill the enemy, the people shouldn't owe us, don't keep talking useless nonsense." ”

"After eating, go to patrol the camp after eating, and make another feint later."

Zhang Yongshou pursed his mouth, snorted twice, put down the bowl and hung the knife out of the account, "Got it." ”

When Zhang Yongshou left, Bai Yuanjie asked Chen Mu worriedly: "Coffin, can it be useful?" ”

On the shore outside the siege camp, the sound of ship cannons sounded again, and several small cannons on the position also roared, and amid the sound of horns, drums and cannons, the banner army roared and rushed to the city gate.

Under the cover of artillery, the Japanese robbers in the city rushed to the door by the banner army, and moved the brick and stone wooden pillars blocking the door with all hands and feet, and then Zhang Yongshou gave an order, and the flag army dispersed.

On the tower of the city gate, the pirates were holding the stones and rolling down.

Another feint was in vain.

Chen Mu drilled into the hole at night to take a look, the miners did this very easily, underground, not only on both sides of the hole to tie up braces and beams to prevent collapse, but even the bottom was paved horizontally with bamboo, with a little slope dug inward, so that it was easier for the coffin to go in.

There were countless barbed wood in the trench under the city, but the miners unloaded a passage on the first night, and the barbs were thrown on it to hide people's eyes, and a large hole was dug in the bottom of the city, and the soil transported out was only a dime a drop in the ditch even if it was filled in two sections, and it could only be transported to the camp with great effort.

Chen Mu plans to form one-tenth of the engineer troops in the army in the future, these people are not very useful in the encounter, but once it comes to storming, besieging the city or even garrisoning, the engineer troops are too important.

Everything is experience, although Chen Mu really didn't plan to attack the city a few times, but he tried his best to transform his creativity and memory into real talent and experience through practice.

He carefully sketched out the key points of the tunnels in the explosion city, and in the notes he took with him, there was even a sketch of his next development trend.

It is conceivable that for a long time, firearms and cold weapons were parallel, and even if the flintlock pistol in the development stage was added with a bayonet, it could not completely replace the advantage of the three-zhang spear in close combat.

But it doesn't mean that this trend can't be developed, the captured Spanish heavy muskets and grenades in the past provided Chen Mu with ideas.

After this battle, he wants to talk to Guan Yuangu about these issues.

"Brother, dig it!"

Shao Tingda broke into Chen Mu's military tent at night, and it was his turn to supervise the work tonight, only the last bit of work was left, and after digging it, he hurriedly came over and called Chen Mu, thinking that Chen Mu was asleep, but he didn't expect to take a charcoal pen to sketch on the notebook.

The entire banner army of the Xiangshan Thousand Households did not understand why their thousands of households did not like to use large pens, but always carried a few charcoal pens used by craftsmen on their bodies, and tied them very carefully and carefully with thin strips of cloth.

Shao Tingda had some guesses about the reason, he had seen the big stone erected in the shipyard on the shore of Xiangshan, and the handwriting engraved on it was really ugly.

Closing the notebook and putting it into the leather wooden support backpack that was placed on the ground and was similar to the shape of most flag officials, Chen Mu got up and showed joy on his face, "Dig it up?" Wait a few days, let's go, let's go and see. ”

The large coffin filled with gunpowder was dragged into the tunnel, pushed back and dragged into the big hole under the city, and the heavy coffin pressed against the bamboo stick made the whole tunnel resound with a strange echo of squeaking.

The flag officer gave the order to die, and he was not allowed to shout the trumpet with all his strength, and the flag army all blushed and gritted their teeth and pushed forward, and everyone in the nearby trench was even more in their throats.

But there was a black hole outside, and all the pirates in the city went to sleep, and no one noticed everything under the city...... What if you find out?

After the tunnel is dug, this matter will be settled, and no one will be able to prevent the fate of the Guanghai Acropolis being bombed.

In the middle of several potholes underground, the flag army lifted the coffin and covered it with a fire rope, and the fire rope was covered with bamboo strips and extended a long way. The tunnel was slowly sealed, and a large number of flag soldiers crawled out of the tunnel with the fire rope.

Chen Mu put the torch up, and with the sound of snorting and smoking, the nitrified fire rope slowly burned and extended into the cave.

In the dark, the eyes of the people looking at the Acropolis reflect the light of the torches.