A few days later.

Zhu Shun sat in the workers' hall to deal with some official documents, Wan Ji sent an experimental document on the inner mold irrigation cooling method, hurriedly left the workers' hall, and hurried to study the airtight cannon latch.

Zhu Shun put the lake pen in his hand on the mountain character ceramic pen grid, took the not thick but heavy experimental document, and looked at it carefully.

The inner mold irrigation cooling method cools the gun chamber first by means of flowing water to achieve early hardening.

According to the principle of thermal expansion and cold contraction, the outer body tube will gradually shrink inward during the cooling process, and apply pressure to the hardened gun chamber.

During the cooling process, the soft outer body tube will be tightly clamped to the pre-hardened internal gun chamber to achieve the effect of self-tightening of the body tube.

This allows the barrel of the gun to withstand greater bore pressure to achieve the purpose of increasing the service life.

Zhu Shun carefully read the experimental documents that were only a few pages, and solemnly put them into a luodian box, just these few pages of experimental documents, but they could save the lives of many Ming border soldiers and kill more Jiannu.

He stood up and put the Raden box in a secret compartment, and waited until the evening to transcribe a copy in simplified Chinese characters, and stored it in a concrete underground treasure trove dedicated to storing various materials.

Zhu Shun had just locked the secret compartment when there was a knock on the door, and he sat back on the official hat chair and said, "Come in." ”

A sentence came in, really came in, and the tower man didn't stop him.

Zhu Shun was relieved, his family came.

A young man wearing a six-petal bright helmet and an official green armor walked in, and it was actually Cao Dingjiao, the commander of the Miyun guard.

I haven't seen him for a while, Cao Dingjiao's Chinese face is a little more sharp, and the depression that I always had in the past is completely gone: "Uncle." ”

Zhu Shun's calm face had a hint of gentleness: "Ding Jiao, sit down, and my uncle will call your aunt in a while and personally cook you a few favorite dishes." ”

"Because you were asked to go to the frontier as a commander, your aunt complained a lot during this time that your uncle didn't know how to feel sorry for the child."

In Miyun, the guard completely rectified an elite team, and did not hesitate to offend a six-part squire, and killed Cao Dingjiao, the nephew of the squire.

Holding a six-petal helmet in one hand, he actually scratched his head with the other hand, stupidly happy, and said without any surprise: "I have long wanted to eat the ginseng black chicken soup made by my aunt." ”

Zhu Shun called a palanquin man and instructed: "Go back and tell the second lady that Ding Jiao is back, take out the ginseng at the bottom of the box sent by the prince, and make up for Ding Jiao." ”

Cao Dingjiao saw that the sedan chair man was leaving, and immediately shouted: "Third master, tell my aunt that you must put more chili peppers." ”

The sedan chair man who was blind with one leg in one eye in order to fight against Jiannu haha: "I didn't expect you kid to be quite spicy." ”

Zhu Shun nodded with satisfaction at Cao Dingjiao's third master, although this sedan chair man was from a humble background and was only the lowliest military household in the Ming Dynasty, but he was the robe of the second uncle Zhu Zhongyi, otherwise he would not have been asked to be a personal guard for Zhu Shun.

Zhu Shun wanted to shout the last sentence of the third uncle according to his seniority, and Cao Dingjiao naturally wanted to shout the last sentence of the third master, it seems that he was a commander with more than 5,000 soldiers in his hands, and he was not corrupted by power.

Zhu Shun once again explained to the man in the iron tower at the door, and asked him to call a few beautiful maids to bring some tea and food, first suppressed Cao Dingjiao's hunger, and asked: "Dingjiao, what's the matter with coming back this time." ”

Cao Dingjiao's face suddenly became a little serious, and he took out a fire paint letter with chicken feathers and handed it over: "This is a letter sent by Sun Chuanting, and he is going to fight to the death against the thieves in Tongguanwei." ”

"It's just that with his less than 10,000 soldiers and horses, in the face of the menacing army of 200,000, the disparity in strength is too great, and I hope the imperial court can send a reinforcement."

"There are a lot of troops that can be mobilized near the capital, but only Zhou Yuji's firearms battalion and the Liaodong border army can really fight."

"The firearms battalion needs to defend the Beijing Division, and the Liaodong Border Army needs to be used to guard against Jiannu."

Cao Dingjiao won't say anything about this, and there is no need to say it, Zhu Shun is very clear about the next development.

The group of Donglin Party, who were good at quarreling, undoubtedly unanimously recommended Cao Dingjiao and asked him to bring thousands of soldiers and horses to help Sun Chuanting.

After all, there are as many as 200,000 thieves facing this time, even if Yuan Chonghuan, the governor of Liaodong, is still alive with thousands of soldiers and horses, there is only one way to die, let alone a not very famous Cao Dingjiao.

Zhu Shun just dragged his eldest brother Cao Wenzhao and nephew Cao Bianjiao in Liaodong, but he didn't expect such a big difference in the next development.

Historically, Sun Chuanting had a decisive battle with the thieves in Heishuiyu, but he didn't expect to change to the Pingchuan area in front of Tongguanwei this time.

It's hard to talk about this war.

Gao Yingxiang was born as a horse trader in his early years, and his hometown was adjacent to the front line of the fight against the Mongolian Tatars.

Gao Yingxiang recruited a large number of villagers who could not survive, and had a large number of elite cavalry in his hands.

The cavalry ran into the mountain road, and the role of the infantry army was not as great, and if it was replaced by the Pingchuan area, the elite cavalry could play the greatest role.

It is estimated that a few waves of charges will be able to disperse Sun Chuanting's establishment.

After all, Sun Chuanting wanted to fight Gao Yingxiang in a decisive battle with Tongguanwei, not in the dangerous Tongguanwei.

Zhu Shun guessed that Sun Chuanting was going to have a decisive battle, and couldn't help laughing: "This battle is easy to say, and that book was not given to Sun Chuanting in vain." ”

Sun Chuanting's vision of war is not only limited to the battlefield, but also looks at the whole situation, and even takes into account the political hall that many famous generals can't take into account.

was far away from the front line, but he also calculated the Donglin Party once.

The official document asking for help was deliberately sent to the imperial court, deliberately letting the Donglin Party know the strength of the thieves, and deliberately asking them to recommend Cao Dingjiao.

Although Cao Dingjiao only has a few thousand soldiers and horses, the role he can play is beyond the reach of 10,000 Liaodong border troops, because behind him stands a group of industrialists.

With these industrialists who serve the country and the people, the most important problem of grain and grass has been solved first.

The corruption problem of the Ming Dynasty is extremely serious, and the ordnance was transported from the capital to Sun Chuanting's hands, and there are three achievements left, thank God, not to mention the grain and grass.

Without ordnance, they can drag it out, without food and grass, as long as the sergeants don't eat a meal, their morale will be low, and even mutiny, how can they fight with the thieves.

The generals of the general army can only find a way to raise grain and grass, with the local squires not pulling out a dime, it would be good to donate a stone of grain, where can they be counted on.

With industrialists, the problem of military morale will be stabilized, and it is easy to say how to fight next.

There is another crucial reason why Sun Chuanting takes a fancy to Cao Dingjiao.

Daming Arms Company.