It was dark, and on the other side of Nan'an Shijing Town, a large five-entry compound in the town.

In the study, a seventeen-year-old boy sat on a chair with his backrest. The boy was Zheng Yiguan, whose original name was Zheng Zhilong. Although Zheng Yiguan was not old, he had been to many places, including Manila, Heijing, and joined the Catholicism locally. There was a foreign name named Nikola, and he also went to Annan, Siam, and Japan.

Zheng Yiguan also knew many languages. In addition to the Ming Dynasty Mandarin and Fujian Minnan, he also knew many languages ​​such as Spanish, French, Dutch and Japanese, so this person was also a genius.

Shi Daxuan reported to Zheng Yiguan what happened in the past few days: "Brother, Zhang Shengnai is a craftsman family, and he can do everything. Our Brothers Alliance has found treasures! With this person's help, let alone the vulnerable Guangdong Navy, even the Korean Navy, various Red-haired fleets, and the Big Farran Cyclists in Manila are not our opponents! Our Brothers Alliance can even send troops to Luzon and get a share of the Big Farran Cyclists!"

"Okay, then we will write a letter to the leader and let the leader meet this person." Zheng Yiguan nodded and agreed. In fact, Zheng Yiguan was only seventeen years old at this time and was not very experienced.

"Slow down!" One person stopped Zheng Yiguan, who was about to pick up a pen to write a letter.

Shi Daxuan and Zheng Yiguan turned around, but they saw that they were uncle Huang Cheng who came in.

Zheng Zhilong's uncle Huang Cheng was the real boss of Zheng Yiguan and Shi Daxuan. Later, why could Zheng Zhilong become the biggest pirate in the Ming Dynasty? Because he was Huang Cheng's nephew and inherited Huang Cheng's fleet; Zheng Zhilong became Li Dan's adopted son, Li Dan died young, and Zheng Zhilong inherited Li Dan's fleet; later, Zheng Zhilong abandoned his original wife whom he married in Japan and married Yan Siqi's daughter. After Yan Siqi's death, he inherited Yan Siqi's fleet. The inheritance of the three major pirates was inherited by Zheng Zhilong, and it was impossible not to become the largest pirate in the Ming Dynasty.

"Nephew Shi Xian, you step back first. I have something to say to my nephew." Huang Chengdao said to Shi Daxuan.

Shi Daxuan nodded and exited the study.

Huang Cheng said to Zheng Yiguan: "Don't worry about this matter first. You can go to Japan to find Li Dan first. You can also take a batch of goods to Japan to hand it over to Li Dan. This trip will be done, and we can make a lot of money."

"Then let's wait for the leader to come back?" Zheng Yiguan asked.

"As for the person you are talking about, let him stay in Kinmen for the cannon for the time being. If the leader of the alliance comes, he will be taken to Dongfan by the leader, so he can't cast cannons for us. It's better to delay the army and drag the leader for a while. When he comes back, this person has also cast a lot of cannons for us and brought out a group of high disciples." Huang Cheng said. After all, Kinmen is their territory. When he arrives in Dongfan, Huang Cheng can't even insert it.

Over the past few days, Gao Shixin has either taught craftsmen to improve gunpowder or brought craftsmen to build mud molds prepared to cast artillery every day.

It’s not that Gao Shixin didn’t know about iron mold casting cannons. Almost every time traveler knew the classic iron mold casting cannons. But it was not that a pig could use iron mold to cast cannons by passing through. If you want to use more efficient iron mold casting cannons, the first thing you need to solve is the problem of whitening of the cast cannons.

White-mouthed castings are definitely not available. What is needed is a cannon of gray-mouthed castings. Of course, there are more advanced silver cast iron and ductile iron. Anyway, these Gao Shixin know nothing about it, only his good brother Zhang Yong knows it.

Iron mold casting cannons, because the castings have a short cooling time, no graphite precipitation during the crystallization process. All the carbon in the castings exists in the form of permeable carbon bodies, and the fracture is silver-white, which is white. Gao Shixin knew only a little and did not know how to solve this problem. Therefore, he could not use iron mold casting cannons, but used the traditional mud mold casting method to cast cannons.

However, the cannon cast from mud molds is uneven and has a bumpy pit. Forget the outer wall, but the inner chamber is also bumpy, the accuracy of the cannon will be greatly reduced, which is even more serious, which may cause a blast accident.

So Gao Shixin adopted a new method. The outside was made of mud to cast the cannon, but the inner chamber was made of steel cores. That is, put a steel core as big as the diameter of the gun in the middle of the clay mold, so that the inner chamber of the cast cannon would be very smooth.

The melting point of steel is higher than that of iron, so don't worry about sticking to the steel core after pouring it in. Just pull out the steel core with a hand-crank crane before the iron is completely cooled.

Just when Gao Shixin was busy, a little loli's voice came from behind: "Are you a new craftsman?"

Gao Shixin turned around and saw two little lolita standing behind him, one of whom was wearing a pink dress, looking about twelve or three years old; the other little lolita was wearing a lake green dress, looking slightly smaller than the little lolita in red. Both of these two little lolita were as beautiful as jade, which was very cute.

Seeing that it was two cute little loli, Gao Shixin hurriedly bowed and said, "I'm going to go back to the two little ladies. I wonder why the two little ladies don't make female red at home, but come to see the casting cannon?"

The little loli in red snorted coldly: "Why can't my aunt come? Everything here belongs to my dad!"

When Gao Shixin heard the little loli's tone so loudly, he asked, "Is Ling Zun's surname Yan?"

"That's right, you, the craftsman, should you know? Everything here belongs to my father, including you, and my father's person!" The little loli in red said with her head high and proudly.

"So it's Miss Yan!" Gao Shixin bowed again.

Needless to say, the little loli with such a tone on Kinmen Island, and her surname is Yan, must be Yan Siqi's only daughter. However, this woman was also unfortunate in her life. Later, she married Zheng Zhilong, and Zheng Zhilong accepted the invitation of the Ming Dynasty and became a general of the Ming Navy. She thought she would enjoy her blessings with Zheng Zhilong, but who knew that Zheng Zhilong would surrender to the Qing Dynasty later. As a result, the family went to the capital. Zheng Zhilong's money was quickly blackmailed by Chinese civil and military officials in the court and became a pauper. The last family was thrown into Ningguta as a slave.

Later, Zheng Chenggong had no hope of expedition in the Northern Expedition, so he went to conquer the Eastern Expedition.

Seeing that Zheng Zhilong could no longer be used to threaten Zheng Chenggong, the Zheng Zhilong family, which was useless to the Qing Dynasty, were killed. I wonder if there was any of them including Zheng Zhilong's wife, Miss Yan. Even if she was not killed, she would be left as a female slave in Ningguta and lived her life miserably.

Zheng Chenggong's biological mother, Zheng Zhilong's Japanese wife, had been annihilated by the Qing soldiers before.

Miss Yan took the little maid and looked around in the blacksmith's yard, watching Gao Shixin commanding the craftsmen to work with interest. She walked to a cannon that had just been cast and reached out to touch the cannon's body: "Why is it so rough? I thought you were so powerful, but who knew that she was still not as good as the cannon cast by Hongmaoyi."

"Miss Yan, look at the inner chamber of this cannon." Gao Shixin said.

The little loli walked to the front, stretched her hand into the muzzle, touched the inner chamber, and found that the inner chamber was indeed as smooth as a mirror. She curiously stretched her little head to the muzzle and looked inside carefully.

"Stop watching Madam Yan. This cannon is completely fine, no problem, no worse than Hong Maoyi's."

"It's not up to you, the cannon caster, that's the final say. Can Po Wang be trusted by selling melons and boasting? Or drag the cannon out and fire a few cannons outside to find out whether it's good or bad." Miss Yan snorted disdainfully.

Unfortunately, after trying the cannon, Miss Yan couldn't find any fault, but she still said unwillingly: "What do you know? Maybe the cannon you cast will explode if it doesn't take a few shots."
Chapter completed!