In Ye City, after Yuan Shao's more than 10,000 cavalry were completely eliminated by Lu Ning's army, Yuan Shao was so angry that he scolded Tian Xiaoniang. After Lu Ning's army wiped out his cavalry, he did not come to attack his Ye City, but continued to harvest wheat in the fields. This made Yuan Shao vomit blood and almost went crazy. He cursed Lu Ning's eighteen generation ancestors in the official residence, saying that Lu Ning was too shameless.

Lu Ning was too lazy to care about the wheat harvesting. Zhao Yun, Gao Shun, Xu Huang, Hao Zhao and others would do it. They brought 50,000 troops out every day, 20,000 troops to harvest wheat, and 30,000 troops to guard the wheat. The whole work was carried out in an orderly manner. Lu Ning, Guo Jia and Lu Su were drinking tea and chatting in the big tent, and there was nothing much to do.

Guo Jia said, "Lord, this battle is really cost-effective. It doesn't have to lose troops and generals, and it can also receive a large amount of food. It is estimated that our army can get two or three million harbors of grain just by snatching the wheat in Yuan Shao's field. Such a battle is really unprecedented. Even if the enemy knows that the food in the field is robbed, he dare not go out of the city to resist. I guess even if our army does not attack his city this time, he will not live long."

After hearing this, Lu Ning laughed loudly and said, "Wangxiao, is it that serious? The city still needs to be attacked, but it is more cost-effective to catch some food first. Anyway, the food and grass are free, and the more it is better? Since Yuan Shao doesn't want it, it's the same for us to help him harvest. After the city is captured, we have to allocate it to the people in the city. We can't let the people in the city have no food to eat."

Lu Su thought for a while and said, "Lord, if you don't attack the city now, it will be unfavorable to our army's attack after a period of rainy season."

After hearing this, Guo Jia smiled and said, "Zijing, this is not a big problem. Our army marched with war horses, and our army's war horses are all nailed with horseshoes. The rainy day will not have a big impact on our army, and it should have a greater impact on infantry. As for the moat beside Yecheng, we will fill the moat and attack the city again. Anyway, Yuan Shao dared not go out of the city to fight. He is like a turtle, huddling in the city. If our army does not want to attack the city, there will definitely be problems in the food and grass in his city over time. By then, Yecheng will be destroyed without attacking. As long as Yecheng is broken, even if Yuan Shao finished playing, there will be only about 10,000 soldiers in Qinghe City and Julu City, and then Xin will not be 50,000 soldiers. Moreover, their city will be short of food and grass at that time, so it is extremely easy to deal with them."

Lu Su said: "Yecheng, the city walls are tall and thick. If our army attacks for a strong force, the loss will be great! Besides, Yuan Shao still has twenty troops stationed in the city, so our army is not superior."

Lu Ning was also thinking in his heart that it was indeed difficult to attack the city. The soldiers suffered too much casualties by relying on traditional impact on the city gate and attacking the city wall. The next step is that Ma Jun and the others will find a way to get the gunpowder out. However, the gunpowder technical content is too low. Once used, it will soon be learned by others. It will bring more hot weapons, which means the end of the cold weapon era. "Don't worry, Zi Jing, I have asked Ma Jun to make two crashes, and I guess it will be sent here in the next few days. At that time, our army will use a collision vehicle to crash the city gate, and it will not take long to knock the city gate. As long as the city gate is knocked open, our army will not have to attack the city wall."

Lu Su smiled and said, "Lord, what kind of car is hitting the city? Isn't it an ordinary wood hitting?"

Lu Ning said: "There is a little different. I made a car for the wood collision. I originally asked that even the impact barrels were made on iron. But Ma Jun said that, he was afraid that the soldiers could not push them, and that they were too difficult to transport, so he only made a car frame."

After hearing this, Guo Jia thought for a while and said, "Do you want to use the speed of the vehicle frame to increase the impact force?" After hearing this, Lu Ning nodded in agreement with a smile.

Guo Jia's brain is easy to use. As long as you say something, you can immediately think of its performance and function. I really don't know how his brain grows, and he will be so smart. "Fengxiao, Zijing, do you know how those Taoist priests who refine immortal elixirs are practicing? I heard that they can also refine sulfur, nitrate and other things, but this is the case?"

After hearing this, Guo Jia laughed and thought Lu Ning also wanted to refine the elixir of immortality! "My lord, you can't listen to all the words of those Taoists. Isn't my illness just for them? If you didn't ask Mr. Zhang Ji to diagnose me, I wouldn't take medicine every day according to the formula given by those Taoists, and my health will get worse and worse. Fortunately, I met my lord and asked Dr. Zhang to help me take my pulse and prescribe a prescription. The medicine was boiling, so that my illness would gradually recover. Otherwise, the consequences would be unimaginable. As for the lord's words about boiling salt and sulfur, I could even do a little bit. It was taught by those Taoists, but it was very dangerous. If you were not careful, it would cause a fire."

Damn, if you didn’t follow Lu Ning, you would have to live to be in your thirties and not even at forty years. Now let Zhang Ji and Hua Tuo treat you, that is to let you live a few more years and avoid dying early. Now you really think Lu Ning is looking for Taoist priests to refine elixirs. What kind of bullshit elixirs in the world are all tricks of those Taoist priests talking nonsense. How could Lu Ning, a later generation, believe it? "Feng Xiao, I am not going to let Taoist priests refine elixirs, but we just said that it was too difficult to attack the city, so I thought of a simple method, but it requires a lot of nitrate and sulfur. I don’t know if it can be extracted. If there are these two things, it will be easy to attack the city."

After hearing this, Lu Su and Guo Jia were puzzled that nitrate and sulfur were flammable, which was used for arson. Can setting fire outside the city wall burn the city wall? This made both of them feel incredible, but many impossible things have happened to Lu Ning, which makes them feel a little credible.

Guo Jia glanced at Lu Ning and said, "Lord, are you talking about it true? Then the nitrate and sulfur can only be used for arson. Isn't it said that the other things will have in attacking the city?"

Lu Ning thought for a while and thought that it would be better not to tell them for the time being that this kind of thing is too easy to make. "Whether this matter is feasible, we have to wait until we get back and let Ma Jun and the others do it before we know. Now I am not sure that it can be done."

After hearing this, Guo Jia said, "The method of refining sulfur and sulphur and salt is simple. Then I will tell Ma Jun and the others how to practice. I have become a doctor for a long time and have taken the shitty elixirs mentioned by those Taoists since I was a child."

In the blink of an eye, it was early June, and the wheat that Yuan Shao could harvest in the fields was almost harvested by Lu Ning's army. Lu Ning asked Zhao Yun, Xu Huang, Gao Shun and others to lead troops to send some arrows to the soldiers guarding the city on the city wall. It was certain that Yuan Shao always felt that Lu Ning's army would not dare to attack his city, so he first let him taste the power of Lu Ning's long-range weapons.
Chapter completed!