After Wang Kefan returned to Chongyang, he settled Li Runniang, and then began to organize his troops and horses to prepare for the attack on Puqi. He had few soldiers and couldn't leave too many troops to watch his family, so he transferred Wang Sheng back from Tongcheng, where only a small number of young and strong regiments were left, and he was basically singing about the empty city plan.

Chongyang is the foundation, no matter what, a regular army must be left to guard, not only to guard against the Qing army, but also to guard against the Ming army from Hunan.

The Ming army under He Tengjiao was uneven, except for Hao Shaoqi and Wang Jincai, most of them were local troops stationed in various state capitals, and their combat effectiveness was very poor, but they were all good at harming the common people.

Fortunately, the location of Chongyang is relatively remote, far away from the road from Yuezhou Mansion to Wuchang Mansion, and there will not be too many chaotic soldiers to harass it. Wang Kefan left Tan Xiao's two sentinels to guard Chongyang, coupled with the thousands of young men under Meng Bao, as well as the solid city defense that has been repeatedly repaired, even if it is suddenly attacked by a large army, it can support it for a period of time.

Tan Xiao is thick and fine, and sometimes he is more reliable than Zhou Guodong.

As soon as Wang Sheng arrived in Chongyang, Wang Kefan took him out of the city and went straight to Longjiao Mountain, saying that he wanted him to see the latest secret weapon......

……

Forty miles south of Chongyang, at the southern foot of Longjiao Mountain.

In front of Wang Sheng is an ordinary Miao village, to say what is special, is that this Miao village is built on the mountain, and the wall built with mountain stones is very solid, even no less than the city wall of Chongyang County.

Another thing that is special is that there are no villagers in this village. When I asked Wang Kefan, I learned that this Miao village had long been abandoned, and was later used as a nest by a group of bandits, and it was just wiped out by the Gongyi camp a few days ago.

The walled wall is built at the throat of the entrance to the valley, and the total length is only a few tens of meters, but it is tall and rugged, occupying the terrain, and it seems to be impregnable. A few dozen meters in front of the wall, a large hole was dug impressively, and there seemed to be a tunnel below, and the miners carrying mud, sand and gravel on their backs were rushing in and out, and it seemed that they were still digging.

There are about 200 of these miners, all of whom were eliminated by Lu Renqing, they have worked in the mine for half their lives, although they have not reached the standard of recruitment of the Gongyi battalion, they are all good at digging holes and digging soil.

"Gimbal what is this for?" Wang Sheng couldn't see it.

"I invented a new siege tactic, and today I want to be the shiyan of Zuihou." Wang Kefan looked very excited, like a child who had just gotten a new toy.

Invent? shiyan？ These words sound so strange, but Wang Sheng is used to them, but he is even more confused.

Since he joined the army, he has studied hard military books, and personally participated in the Chongyang City Defense, and he is already very familiar with the tactics of attacking and defending the city, but he can't see anything special about the tunnel in front of him.

Tunneling is a very common method in siege warfare, but the amount of work is extremely large, and it is easy to be counter-sabotaged by the defenders.

It is relatively simple to dig the tunnel under the city wall, but to completely dig up the city wall, you have to dig out a huge hole under the city wall, and ensure that there can be no collapse in the process.

Such a long time gives the defenders room to calmly counterattack, such as digging tunnels in reverse and pouring water into them, which can easily crack this tactic.

The tunnel in front of Wang Sheng is not wide, judging from the soil and stones transported, it will take at least a month to dig up the wall, what kind of new tactic is this?

"Third brother, don't be impatient, wait and see."

Wang Kefan smiled and didn't explain much, Wang Sheng was calm, and he didn't ask more, just waited with him.

Finally, the miners stopped, and a thin figure came out of the tunnel and shouted to the miners behind, "It's okay, no more digging!" ”

Twist, Wang Sheng recognized him, first followed Lu Renqing, and was later transferred to Wang Kefan's side, every day outside the city in the mud mound, I don't know what he is doing, the people and civilians in Chongyang City all say that he is a half-fool, a second madman, and his head is not very bright.

"General Wang, General Wangsan, is ready."

"Okay, let's get started."

With Wang Kefan's order, more than a dozen miners shouted the trumpet and carried a thick coffin into the tunnel, Wang Sheng could see clearly, the coffin was not only thick and abnormal, but also seemed to have been specially processed around, looking at the heavy appearance, it must be filled with something.

He was even more confused, which one was Wang Kefan singing?

The twist got into the tunnel again, but Wang Kefan ordered everyone to retreat, pulled Wang Sheng straight back for three or four hundred steps, and then stopped.

The twister came out again in the distance, and he ran in this direction, and behind him, there seemed to be smoke and fire flashing in the tunnel.

What is this for? Wang Sheng also knows that he has always blown up some dirt and stones, can he still blow up this solid wall?

"Boom ——!"

Suddenly, there was a loud bang, and the stone was shattered!

A huge cloud of smoke rose in front of him, and the solid wall suddenly collapsed like a broken building block, and countless small pieces of gravel flew into the sky and fell like rain. When the smoke gradually cleared, the original intact walled wall cracked a huge gap!

Everyone was dumbfounded, and even the twister stopped regardless of the danger and turned to look at the masterpiece he had created. Wang Sheng and the soldiers and miners stood still like stupid, not moving for a long time, and no one spoke.

Wang Kefan nodded with satisfaction, because he was worried that the power was not enough, he deliberately increased the dose of gunpowder, and the result was a success, and the effect of the explosion was very good.

Gunpowder is the best means to deal with the city wall, although the power of black powder is limited, but the use of modern chemical and physical knowledge, a large amount of gunpowder is fully burned, an explosion occurs at the same time, and all the energy is concentrated in one direction to release, enough to destroy the ordinary city wall.

The reason why the ancients did not master this jishu was mainly due to the lack of scientific knowledge and the full power of the explosion, which was also completely beyond their comprehension.

In Cold Weapon warfare, most battles revolve around siege warfare and siege warfare, and unless the strength is equal or unavoidable, the weaker side will deliberately avoid field battles and rely on the city to hold on.

This is also the best option for the weaker side, because the lack of effective siege means tends to last for a long time, and from this a variety of tactics are derived.

With the secret weapon to break through the city wall, the Gongyi battalion has a trick to set up a housekeeper!

With a "boom", the soldiers behind Wang Kefan broke out into a burst of cheers, rushed up together, lifted the twist and threw it into the sky, again and again, excited.

The miners, the soldiers, all are cheering for the twisters, they have already reacted, this terrible ability is a powerful weapon, and this weapon is in their own hands!

Wang Sheng was stunned for a long time, and finally muttered: "As soon as this technique comes out, there will be no more cities in the world to defend!" ”