The soap workshop could expand at such a speed in the hands of Cao Jie, which Bai Feng never expected before handing over the soap workshop to Cao Jie.

Now soap workshops have been distributed in Yizhou and Yecheng, and the soap has been available for more than a year.

Although the soap market in Yizhou and Yecheng is not yet saturated, there is definitely no problem in continuing to expand outwards now.

"Well! With the support of my husband, Jie'er is more confident!"

Cao Jie nodded and said, feeling very happy.

After telling Bai Feng the good news, Cao Jie went to Diao Chan and Cai Wenji to discuss how to start the construction of soap workshops in Qingzhou and Xuzhou.

The main issues are location selection and arrangement of shopkeepers.

Liuli and Zhang Qiying, who had been a little bored at home recently, after learning from Bai Feng that soap workshops would be opened in Qingzhou and Xuzhou, they also went to Cao Jie to ask for help.

"It's a pity that the productivity improvement of the current R\u0026D center is limited. Otherwise, the steam engine could be as popular as soap and sell well throughout the Wei Dynasty."

Bai Feng was in the study, looking at the steam engine production report sent by Zhuzhu, and thought to himself.

The number of craftsmen in the R\u0026D center was slightly insufficient before, but Bai Feng replenished it through graduates from Hanzhong School.

Now there are two steam engine production lines and the number of craftsmen is enough.

The two steam engine production lines combined can produce eight steam engines every day.

For Bai Feng, this amount is definitely quite satisfactory without comparison with soap.

"But we can't compare steam engines with soap. After all, it's unrealistic to produce thousands of steam engines a day. Even if they were produced, there wouldn't be so much coal to burn so many steam engines."

Then Bai Feng thought about the coal mining situation in Yizhou.

The usage of steam engines in Yizhou is now on par with Hanzhong.

Xiahou Dun was also very concerned about coal mining in Yizhou.

Currently, there are three open-pit coal mines being mined in Yizhou.

The coal produced is naturally more than enough to supply the steam engine.

About one-fifth of the coal has to be transported to Hanzhong.

Bai Feng is now a major user of Yizhou coal mines.

Some Yizhou nobles are now also popular in using coal for heating.

But people still use firewood.

After all, if every household is to be able to use coal as fuel, Bai Feng needs to advance industrialization to a new level.

At least to the extent that it can build an excavator.

Bai Fengzhen was thinking in his mind whether coal mining should be carried out in Hanzhong after the railway construction in Hanzhong is completed and the new steam engine train is put into use.

Or continue to buy coal from Yizhou.

After all, coal in Hanzhong is more difficult to mine than open-pit coal mines in Yizhou.

Even if the mines in Hanzhong now use explosives to mine, it is not as convenient as directly purchasing coal from Yizhou.

Besides, if you use more coal, you should use less coal.

The sooner the easily mined coal is used up, the harder it will be to mine the remaining coal.

"Let's keep the current mining progress for coal in Hanzhong. Next we need to buy more coal from Yizhou."

After weighing it up, Bai Feng made a choice in his heart.

Bai Feng then planned to go to the R\u0026D center to see how the new steam train made by Geng Zhuzhu and the others was progressing.

As soon as I left the study, a servant came to report:

"Hanzhong Hou, a letter from Xiahou Zhou Mu to you!"

Bai Feng took the letter from the servant and returned to the study again.

"I just thought of buying more coal from Xia Houyuan, but unexpectedly I received a letter from him."

Bai Feng said softly while opening the letter.

There was very little content in the letter, and Bai Feng read it quickly.

"It turns out that Xiahou Dun wanted to come to Hanzhong to see the use of steam trains. It seems that steam trains are still something that Xiahou Dun has never forgotten in his heart!"

Bai Feng remembered the first time he took Xiahou Dun to visit the steam train. Xiahou Dun immediately showed interest in steam trains and wanted to buy this steam train from Bai Feng.

At that time, Bai Feng only had this steam train in his hands, and of course he did not choose to sell it to Xiahou Dun.

"Maybe Xiahou Dun comes this time and wants to buy a steam train again."

Bai Feng couldn't help but think in his heart.

However, his answer was still the same as before, that is, not selling!

Yizhou, Xiahou Dun's mansion.

After writing a letter to Bai Feng, Xiahou Dun was already ready to go to Hanzhong.

This time he went to Hanzhong to see the steam train because he received an order from Cao Cao.

After Xiahou Dun reported the situation of steam trains to Cao Cao, Cao Cao also became very interested in steam trains.

Also, Cao Cao wanted to know whether Bai Feng's control over Hanzhong had reached the level of a state within a state.

That's why I wrote to Xiahou Dun this time.

Xiahou Dun did not just go to Hanzhong to see the actual use of steam trains.

The other thing is to meet with the officials in Hanzhong.

The next morning, Xiahou Dun set off for Hanzhong.

At this time, Bai Feng was in the R\u0026D center.

"It will take about half a month or so before this steam train can be put into use."

Geng Zhuzi said to Bai Feng.

The new steam engine train has completed the manufacturing of the main body, and the remaining parts are mainly debugging and improving the details.

After listening to Geng Zhuzi's explanation, Bai Feng nodded with satisfaction.

It only took a month and a few days to build this steam train.

Gongzhu and other craftsmen such as Li Tiedan, Wang Gang and Xu Dali have greatly improved the efficiency of manufacturing steam trains.

"Well, everyone's progress is very obvious. After this steam train is put into use, the development of Hanzhong will be further improved."

Bai Feng said happily to Geng Zhuzi and others.

"The next step is to continue to build steam trains, and we don't just want to use steam trains in mines."

"In the future, people in Hanzhong will be able to take steam trains when going out, so as to avoid some of the pain of traveling!"

When Bai Feng said this, the eyes of Geng Zhuzi, Li Tiedan and others became brighter and brighter.

As early as when Bai Feng handed the drawings of the steam train to Geng Zhuzhu and others, they heard Bai Feng mention the changes that the steam train had brought to the Wei Dynasty.

Now that a steam train has been put into use, when Bai Feng talks about it again, Gengzhu and the others feel even more profoundly.

"We will definitely live up to the expectations of the Hanzhong Marquis!"

Teng Zhuzhu said in a deep voice.

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