Liu Zeqing was originally the secretary of the capital of Shandong Town, Chongzhen took the initiative to attack the iron factory and the invading Houjin army for three years, and in the subsequent battle of Zunhua, he personally went into battle, repelled the menacing Houjin army, and was awarded the title of deputy commander-in-chief.

In the ninth year of Chongzhen, Liu Zeqing was stationed in Xincheng, and he also resisted the Eastern Prisoners, but he was greedy, not only deducting the military salaries of the soldiers, but also conniving at the military horses under his command to plunder the place, and was demoted to a general.

Liu Zeqing spent 20,000 taels of gold in the sixteenth year of Chongzhen to bribe Zhou Yanru, the first assistant of the cabinet who passed through Shandong, and was reinstated as the chief soldier of Shandong by the imperial court.

To tell the truth, after Liu Zeqing surrendered to the Qing Dynasty, he did not lead the army south, nor did he attack the local rebels, but only lived in the Beijing Division, which was still a few points stronger than Liu Liangzuo, Xu Dingguo and other executioners whose hands were stained with the blood of the Han people.

The change of Jiashen, the surrender of the famous ministers is innumerable, Li Xingzhi naturally could not kill him because of the surrender of Liu Zeqing in later generations, but Liu Zeqing eleven years ago Chongzhen compared with the Guan Ning army, he still had merit to the Han family.

Li Xingzhi wants to deal with Liu Zeqing, firstly, to prevent trouble before it burns, after all, this guy is the first of the four towns in Jiangbei to surrender to the Qing, secondly, he is greedy for the thousands of military horses under Liu Zeqing's hand, as well as the five hundred cavalry he carefully built, and third, Liu Zeqing is very rich.

But how to deal with Liu Zeqing made Li Xingzhi a little worried, he was originally the governor of Shandong, and he was also the earl of the imperial court, so it was the best way to send him to Laizhou.

But if Liu Zeqing excused himself, or sent a nephew over, Li Xingzhi was helpless, in history, Liu Zeqing was injured under the pretext of falling off the horse and refusing to send troops to the king

In addition, Linqing, where Liu Zeqing is now stationed, is more than 800 miles away from Laizhou, and the Jingbei Army's attack on Linqing at this time will definitely cause criticism from the government and the opposition, and even arouse Chongzhen's suspicions.

"Marshal, according to the opinion of the lower officials, it is better for you to join the Liu Ministry with his merits to defend Linqing, and to protect Liu Zeqing as the general soldier of Shandong, and first marry Liu Zeqing, of course, this Shandong general soldier is not in vain, and we should ask for the bribe, so Liu Zeqing will inevitably lose his vigilance, and then deceive him to Laizhou in other names."

If you want to take it first, you must give it first, and the strategy of Qian Tianxi, the prefect of Laizhou, is to scare his heart, and then attack his unpreparedness.

Of course, Li Xingzhi also has other means to take Liu Zeqing, and after Zhang Xianzhong recovers, the imperial court will definitely recruit the Shandong army to go south to suppress the thieves.

As the governor of Shandong, Liu Zeqing served under his own hands, and when the time came, a few cold arrows could kill Liu Zeqing, and then let Liu Lishun raise his henchmen to take over Liu's military horses, which was also a matter of course.

"In this way, Mr. Qian first sent a letter to Jinan Liu Buyuan on behalf of Ben Shuai, asking him to jointly protect Liu Zeqing, and then informed Liu Zeqing of the news and asked him to send 100,000 taels of silver to Laizhou."

After Zhang Xianzhong's uprising, the imperial court had to recruit a large army and prepare all kinds of equipment and materials, and he would definitely not be able to go out without four or five months, and Li Xingzhi didn't want to waste half a year's time in vain.

After formulating a method to deal with Liu Zeqing, Li Xingzhi and Song Guangkun went to Zhaoyuan to see the construction of the firearms workshop and the Zhaoyuan Reservoir.

During Song Guangkun's trip to Laizhou, relying on the craftsmen transferred from the Beijing Division, the Zhaoyuan Firearms Manufacturing Bureau began to produce artillery under the auspices of Sun Zhijie.

The Ming Dynasty made artillery basically using the method of clay mold forging, that is, using water and mud to make a mold, and then Fan Jin poured casting, layer by layer of bamboo shoots, of course, the mud mold must be dry to do, otherwise the appearance is dry, the inside is damp, once it encounters a high-temperature metal solution, it will produce water vapor, so that the inner wall of the artillery produces honeycomb-shaped pores, and it is easy to produce explosives when casting.

It takes nearly a month to dry a clay mold, and this clay mold can only be used once and cannot be reused.

When Li Xingzhi arrived in Zhaoyuan, the Manufacturing Bureau had already made 500 clay molds of various specifications for artillery, ranging from 600 catties of small cannons to 4,000 catties of Hongyi cannons, ranging from various models.

According to his colleague John Tang, in fact, the artillery technology of the Ming Dynasty is not worse than that of Europe, and even slightly surpasses it in the current situation.

Because the Hongyi cannon of the Ming Dynasty widely used the casting process of the iron core copper body, it used the principle of low melting point of copper, after the iron tire was cooled, and then used the mud mold or lost wax method to make the mold, and then cast the copper wall.

The barrel of the cannon made in this way is much thinner than that of the previous gun, which not only reduces the weight of the gun, but also improves the quality of the gun.

The more than 300 artillery pieces that Kong Youde brought to Liaodong were basically built in this way, and in order not to make his firearms weaker than Jiannu, Sun Zhijie also used this process.

The production of artillery takes time, and the production of firecrackers also takes time.

According to Li Xingzhi's meaning, the Jingbei Army will not be equipped with three-eyed guns and other disorderly firearms, and the long-range infantry units in each town must be equipped with bird guns and strong crossbows.

As for the crossbow, it showed good combat effectiveness in Lu Xiangsheng's strangulation of Gao Yingxiang's hoplites and in the battle of Qingdu, both of which are recorded in the armor diagram.

It's just that in the absence of a hydraulic barrel boring machine, the production of the barrel of the bird gun is quite complicated.

Tiangong Kaiwu and Ji Xiao Xinshu are recorded, one is the welding method, and the other is the double-layer complex legal,

The Jingbei Army adopted the method recorded in Ji Xiao's new book, which was expensive in the regular iron-smelting, and the two phases were wrapped, that is, a thin layer of the gun body was directly made on a long steel core, and then another layer was placed on the outer part of the gun body to make its thickness meet the requirements.

Of course, this method also requires the barrel to be drilled, and without a hydraulic boring machine, it can only be polished manually.

As for the strong crossbow, as long as there are drawings, ordinary carpenters can build it, of course, there is another reason for the strong crossbow, that is, it is easy to operate, it can be used when you learn it, it is much easier than training archers, and its accuracy at close range is much higher than that of fire guns and shotguns, at least before the advent of rifled guns.

"Tang Jianzheng, how is the matter of the hydraulic cannon barrel boring machine that you talked about with the Song Governor?"

"Dear Mr. Earl, Macao is more than 2,000 miles here, and it takes time to go back and forth."

Tang Ruowang naturally did not dare to offend Li Xingzhi, the earl of the Ming Dynasty, if he wanted to preach in the Ming Dynasty, he had to be recognized by the Ming magnates.

"If you go to Macao again, you will say that their warships, arquebuses and gunpowder are all covered, and even they can come to Dengzhou to do business, and Benjue is preparing to open a city in Jiaoao, can you do the same business in the north!"

The weapons of the Portuguese, Li Xingzhi is not greedy, but this warship is still worth buying imitations.

"Dear Mr. Earl, I am a German, and those people in Macao are Portuguese, and I may not be able to guarantee your request, but I can write to the Macao side and inform them of your request, and I estimate that they will definitely agree to your request, but according to Lu Ruohan, there are only a few galleons and a Galen medium warship on the Macao side."

Tang Ruowang has been in Daming for so many years, and he has also learned some Han people's principles of doing things, that is, to leave a little leeway in everything.