Ten days later, Luoyang, the capital of the gods.

"Your Majesty! Dengzhou suffered from flooding, and according to statistics, 1,234 houses collapsed; 713 dead; One hundred and fifty-two people are missing; There were more than 3,000 victims.

If Wu Langzhong hadn't taken the opportunity to break the righteous warehouse to release grain this time, not only might it trigger a popular uprising, but more people might starve to death. Weichen thinks that he should be rewarded! Yao Xuan (shu) reported.

"Hmmm! That Zheng Thorn Shi's practice may provoke a popular uprising and something big happen! Fortunately, Yanzhi dealt with it in time! She nodded.

After listening to the details of Wu Yanzhi's relief for the victims in Dengzhou, Wu Zetian was very satisfied.

Wu Zetian's policy of governing the people is to recuperate as much as possible. Of course, the battle that should be fought, that must be fought.

"Your Majesty! Weichen thought that the transaction of Zheng Wen, the original assassin history, should be investigated in detail by the three divisions! ”

"Hasn't Wu Yanzhi already investigated this matter? I think it's up to him! Allow Zheng Wencheng to use the official to resist the sentence, let him go to Lingnan to be a county lieutenant!

Lingnan was originally a barbarian land, and it was always a good thing to go to more Chinese people to be officials there. Population growth is also a big deal now, so let's try to kill as few people as possible!"

"Your Majesty is far-sighted, Weichen and others keep it in mind!" He also felt that more humanitarians should be sent there!

"Listening to what Wu Yanzhi said, the Xinye Xinghuang County Order is old and loyal. Let him return to Shendu in three months and serve as the chief criminal!

In addition, Wu Yanzhi was rewarded again, and let him serve as Shangfang Supervisor Shaoqing, still concurrently serving as Dongguan Langzhong, plus the title of Right Su Taichung, and the rest of the positions are the same, the original Zhao Shaoqing was transferred to Dengzhou Assassin History! ”

"Wechen obeys!"

Yao Xuan secretly shook his head in his heart, people from the royal family, there is really no norm for promotion. The commendation I mentioned is generally to reward some money or silk silk, or give one to take the exam.

I didn't expect him to be promoted to the fourth grade Shaoqing all of a sudden! Ordinary people can't climb to such a high position in their lifetime! Now that he has only debuted for a few months, he is a fourth-grade Shaoqing.

Of course, he knew that this Wu Yanzhi was not the fastest. There are children of the martial arts family who served as the fourth-grade Shaoqing and the fifth-grade Zhonglang general as soon as they debuted!

Besides, isn't it that Xue Monk ---- Xue Huaiyi, didn't he just know Emperor Wu Zetian not long ago, and he served as the general of Zhengsanpin Zuo Wuwei and Liang Guogong?

In comparison, isn't this Wu Yanzhi ten thousand times stronger than that Monk Xue?

……

Leaving Dengzhou, their planned route was: all the way south to Xiangyang, Suizhou, Anzhou, and Ezhou. Take a boat down the Yangtze River to the east, cross Jiangzhou and turn right into Poyang Lake.

When Wu Yanzhi was in Anzhou, he received a letter from the imperial court, in which he vigorously praised his practice in Dengzhou, and learned that he had been promoted to the post of Shangfang Supervisor Shaoqing.

He is very happy, not bad, now he is a doctor of Chaosan, a young master of Shangfang, and a right Su Taichung title. In any case, it can be regarded as a high-ranking official of Da Zhou!

Of course, this is just the beginning compared to his own expectations!

A month and ten days later, the group arrived in Poyang County, the county where Raozhou is located---

Why Wu Yanzhi had to come to Raozhou, this is because he has studied the history of metallurgy, and there is one of the largest bile water sources in the country.

He wanted to adopt the "wet copper smelting", which had not yet been mastered, that is, the direct replacement of copper in water with pig iron sheets.

This is the easiest way to smelt copper, as long as there is alum. Of course, this gallium will be harvested less and less.

This method was widely used in the Song Dynasty and gradually decreased during the Ming and Qing dynasties, because the resources became less and less.

In order not to interfere with the reading, there is a detailed introduction to the bile copper process at the end of this chapter.

……

After the vast Poyang Lake, we arrived at the Poyang County Post House. Shen Shi was just a moment after the hour, and it was still very early.

Leping County, the local prefecture, has a metallurgical superintendent, which is responsible for the mining and metallurgical affairs of several counties in the state and a neighboring county.

He plans to meet the state's officials early tomorrow morning, including the Assassin Chronicles. This person is Wu Sansi's brother-in-law, and he is also a ruthless character.

Soon after they arrived, Li Xianling and Wen Xiancheng rushed over to greet them.

After everyone saluted each other, they sat down and talked.

"Inspector Cui, how many days have they been?" Wu Yanzhi asked.

"Exactly ten days! Inspector Cui was very resolute in his work, and he did not rest in the county post house, but rushed directly to Leping! ”

Ten days? Four days ahead of schedule! This Cui Yu, sure enough, under his own supervision, began to improve!

"Is Ji Gong here? Didn't you go to the Shendu Asahi gathering? Wu Yanzhi asked.

"Nope! Ji Gong only went to Shendu last year, and this year he only arranged for Lu Changshi to go, and he had already set off yesterday. ”

Wu Yan listened, Ji Xian didn't leave!

……

On the second day, it stands to reason that if the discipline department does not come, he should also shoot Sima or his subordinate judges to meet Wu Yanzhi. But until the hour of the hour, no one came to say hello.

Wu Yanzhi was stunned unconsciously, and Jiang Shipeng reminded on the side: "This Ji Thorn History must be the shelf, and I want Wu Shaoqing to see him in person." After all, he was put here by the waiter, and his position was higher than that of Wu Shaoqing! ”

Wu Yanzhi sneered: "What kind of thing is he? Do you want me to see him? You send it quickly, and let Wen County Cheng send someone to send it to the state office.

I want to handle a smelting supervisor and a coinage supervisor here, he is a assassin, and he must also serve as the supervisor of this coinage prison.

Let Na Sima concurrently serve as the deputy deputy superintendent, and Si Hu will join the army as the judge, and let the three of them come here immediately to discuss the matter! If you arrive late, I will be punished! ”

Wu Yanyi thought, he is Shaoqing, and he is also the right Su Taichung Cheng, where can he be suppressed by this discipline?

……

State government.

Ji Dian had already issued an order to all the officials of the state government not to visit Wu Yanzhi and let him come to the state government by himself.

Because he had already received Wu Sansi's letter, he learned that although Wu Yanzhi was a child of the martial family, he was not friendly with Wu Sansi regardless of his circumstances.

Wu Sansi also wants Ji Zhine to suppress Wu Yanzhi, and if necessary, he will participate in him!

Next to him, a young Xiao joined the army and asked, "Ji Gong, can Wu Yanzhi come?" ”

"How could he not come? He wants to handle the copper superintendent, and there are many things that need to be handled by the state and county! Ji Chu Nee sneered.

................................... dividing line...................................

(Don't look at it)

Introducing "Wet Copper Smelting".

Wet copper smelting is also known as bile copper method, bile water (CuSO4?5H2O), also called bile alum.

The basic equation:

1. CuO+H2SO4=CuSO4+H2O (metathesis reaction)

2. CuSO4 + Fe = Cu + FeSO4 (displacement reaction)

The production process mainly includes two aspects.

The first is copper immersion, which is to put iron in bile alum solution (commonly known as bile water), so that the copper ions in bile alum are replaced by metal into elemental copper and deposited;

The second is collection, that is, the copper powder that is replaced is collected, and then smelted and cast. Although the methods used vary from place to place,

The general operation method is to dig a trench in the vicinity of the bile water producing area with the height of the terrain, lay the bottom with a thatched mat, crush the pig iron, discharge it in the trench, and introduce the bile water into the trench for soaking.

Using the color difference between the copper salt solution and the iron salt solution, soak until the color changes, then put the soaked water away, and take out the mat.

The copper deposited on the mat can be collected and new bile water can be introduced. As long as the iron is not reacted, it can be produced again and again.