The terrain of Yongchang Mansion is flat, but there is a peak facing it. Song Shijun had already blocked the water in Yongchang Mansion, and learned through the news sent back by the spies of the Supervision Department in the city that Yongchang Mansion had a lot of inventory, and the grain alone was enough to eat for three years.

This news undoubtedly dealt a major blow to Niu Ren, generally speaking, the siege battle must be several times the strength of the defenders, so that the city can be broken. And Niu Ren plus the various armies of Song Shicheng combined, there were less than 100,000 people, if it wasn't for the heavy damage to Duan Yiming once, even the troops were not as many as Duan Yiming. A strong assault is clearly not a no-go.

Niu Ren recruited commanders from all walks of life to discuss countermeasures day and night, and Yue Shaoan also studied strategies to break the enemy all day long.

In Niu Ren's barracks, there is a special place, where the guards are not guarding the edge of the camp tent, and they are all separated by a distance of more than ten zhang. There is no other reason, the old and young people living in the tent do not pay attention to the impact.

Niu Ren didn't care about it at first, but after a few days, he felt that it was inappropriate, but he and Wen Chengfang encountered the same problem, the identities of these two people were too special, and there was no way to say anything, so they could only take isolation measures.

However, this method is obviously a palliative rather than a cure, in the camp tent, Yue Xiaoan started reading and practicing calligraphy early in the morning as usual, the little guy is obviously very quick to adapt to the life in the barracks, which may also be related to not having to be tortured by Daoyan every afternoon. Now, the little guy is taken to the battlefield by Dao Yan from time to time to learn the art of war.

These days, the little one is quite interested in this aspect.

"Master, you said that the walls of Yongchang Mansion are all made of mud and stone, did we send people to dig them up and not attack them?" Yue Xiaoan raised his head thoughtfully, looked at Dao Yan with a serious expression, and came up with a brilliant idea.

Dao Yan turned his head and didn't think about this question, and slapped the little guy on the head: "Idiot, such an adult, he actually said something childlike." ”

"I ......"

"What am I?" said another slap: "Do you think that the people there are all idiots like you?" You send people to dig up the wall, and they are all watching? ”

"They hit us, we can stop it. We can make some big shields to block on top and have people dig ...... bottom."

"Buddha Amitayus!" Dao Yan looked inexplicably pained, and said: "Don't say it's my apprentice when you go out in the future, it's too embarrassing, what kind of father can give birth to this kind of son...... Alas......"

The little guy also made a painful and inexplicable look when he learned Daoyan, and said: "Alas, the so-called master must have his apprentice, what kind of father can invite such a master, and what kind of master can teach such an apprentice...... Alas......"

"......" Daoyan turned his head: "I haven't learned other skills, but the problem of poor mouth is gradually rising." ”

The little guy said seriously: "Master, you can't blame me for this. Even if I'm not right, you should tell me it's wrong. Teacher, preach and teach to solve doubts. The disciple has doubts, and the master is puzzled, that is, the master's fault, how can you blame me for being stupid? ”

"Such a simple truth, still use me to tell you?" Dao Yan sat up straight, patted the chair beside him, motioned for Yue Xiao'an to sit over, and then stood a pair of chopsticks next to the cup on the table, and handed Yue Xiao'an a small bamboo stick, and then said: "Look, if this is the city wall, is it easier for you to turn over it along the chopsticks, or is it easier to dig him up with the things in your hand and get into it again?" ”

"Of course it's easy to dig up."

This answer was completely unexpected by Dao Yan, he was already ready to tell his apprentice how to tell his apprentice the pros and cons next, but the little guy's answer and what he prepared were not in tune at all, Dao Yan said angrily: "Then you dig it up and show me." ”

"Master, are you crazy?" The little guy was surprised: "How can a small bamboo stick dig up such a thick copper cup, you wait, you go and borrow a knife, and it will be split quickly......"

"You're a kid, aren't you?" Dao Yan said angrily: "Why don't you say that you will drag your father's artillery here." ”

"That's it."

"Yes, it's okay to bang this cup, is it okay to bang the city wall?" Dao Yan had a sad and indignant expression.

"Haha......" Yue Xiaoan laughed: "I understand." It's just that I've been worrying about this thing when I see you these days, and I guess it's going to make you happy. ”

"Humph!" Dao Yan snorted and said, "Don't come to this set." Your father's business, let them solve it themselves, don't think that if you put a hat on you, I will help, and the door is not ......"

While the two were talking, the guards shouted loudly outside, Qi Shizi: "The general has invited Mr. Daoyan." ”

"Got it!" Dao Yan stretched out his arm and said, "Niu Ren, this kid is not dead." Let's go, let's go over and see, who let me eat other people's food and drink other people's wine, even if I don't help, I have to see it......"

The little one grinned and followed the old Taoist priest out.

In Niu Ren's big tent, many people had already gathered, and seeing Dao Yan come in, Niu Ren hurriedly greeted him, and asked someone to carry out something for Dao Yan to see.

Dao Yan stared at the thing left and knocked, the more he looked at it, the more it looked like a kite, but he didn't dare to conclude, because the shape of this kite was still different from ordinary kites. What's more, the war is tight, and Niu Ren calls himself over to watch the kite as soon as he gets up in the morning, unless he is crazy.

Niu Ren waited for a long time and didn't see Dao Yan speak, so he asked, "Can Mr. Dao Yan recognize this?" ”

"Ahem!" Dao Yan coughed lightly, frowned, and said, "This thing looks like a kite, but there is a handrail at the bottom, and it is so big, isn't it used to carry people?" ”

Niu Ren clapped his hands and said, "Mr. Daoyan is really well-informed, this was sent by the emperor yesterday, and it must be used to carry people." ”

"Oh?" Dao Yan came to be interested.

Niu Ren pulled Dao Yan out of the tent, pointed to the peak opposite Yongchang Mansion City, and said, "According to the emperor's meaning, I want to use this thing to send five thousand elite soldiers into the city from the air." I sent someone to try it last night, and I have to be able to carry people......"

"Is it really that amazing?" Dao Yan's eyes lit up.

"Yes, but ......"

"But what?"

"You saw it too." Niu Ren glanced at Yongchang Mansion City and then looked at Gao Feng and said: "The distance between the city and the mountain is too far, although this thing can carry people, but it can't carry people in the city." ”

"You asked me here to ask me if there is anything I can do to increase the distance I fly, right?" Dao Yan's brows furrowed.

"It must be so." Niu Ren was overjoyed when he heard Dao Yan's words, thinking that Dao Yan already had a way, and looked at him expectantly.

"I can't ......help it," Dao Yan's answer disappointed Niu Ren.

Looking at Niu Ren's expression, Dao Yan said again: "The artillery was not in Song Shicheng before, this thing was not in Song Shicheng before, everything was made by Yue Shao'an, he is in Song Shicheng, and the specific geography here is not as clear as what he has seen with his own eyes, why don't you explain the situation and ask him again?" ”

Niu Ren thought that Dao Yan had any constructive suggestions, shook his head and smiled bitterly, and said: "The geographical map of Dali's mountains and rivers has always been placed in the emperor's book, and the emperors understand every mountain and water here. ”

"Hehe......" Dao Yan laughed softly: "Young man, you are a handsome talent, how can you not understand this truth." The geography of the war has never been a simple mountain-shaped landform, which also includes the light and dark of wind and clouds, have you told your emperor all of these? ”

"Uh-" Niu Ren was stunned.