Zhuo Wenjun followed Zhang Yuan up to the third floor, where Zhang Yuan slept on weekdays.

After Zhang Yuan came up, he lit an oil lamp, which made the dim room a little brighter.

"Come to the bedside."

"Huh?"

Zhuo Wenjun's face was about to be buried in two pieces of meat.

"It's not good."

"What are you thinking, what I'm going to show you is under the bed."

Zhang Yuan really felt that something was enough at this time, a person who was almost thirty, how could he still be here like a little girl.

"Oh."

A look of disappointment suddenly appeared on Zhuo Wenjun's face, but he quickly returned to normal.

At that time, when Lao Zhao was making Zhang Yuan's bed, Zhang Yuan specially ordered that the bed was empty under the bed board, but it was sealed on all sides.

Only by lifting the quilt and the bed board can you see the two wooden boxes inside.

These two wooden boxes are Zhang Yuan's net worth, there is no money, and there are all kinds of embodied silk silks in the system, as well as a few bags of seeds and a few daggers.

Zhang Yuan opened a small wooden box in it, which was full of all kinds of silk silks.

Zhang Yuan unfolded each silk silk before finding the treasure that he pressed at the bottom of the box.

Zhuo Wenjun was stunned at this time, she looked at it carefully when Zhang Yuan flipped it, although she didn't see the words clearly, but she could see the patterns drawn on it.

"These are all techniques you've developed over the years?"

Zhuo Wenjun was like seeing the martial arts cheats at this time, and any silk silk in it was enough to support a wealthy merchant's family.

"Well, nothing unusual.

Almost everyone knows about it, some are dedicated to His Majesty, some are dedicated to the Prime Minister, and some are not all set up by Zhuo Wangsun. ”

As soon as Zhuo Wenjun heard it, he felt that his father's name should not be placed with the other two people, but he did not refute Zhang Yuan, but became interested in the silk silk in Zhang Yuan's hand.

After all, Zhang Yuan said before that this is something that can make the Zhuo family overpower the Huang family.

"What's on this?"

"Map, you can't even look at the map."

In the face of Zhang Yuan's ridicule, Zhuo Wenjun was a little embarrassed, of course she also knew that this was a map, but she thought that there must be something magical about this map.

"And what's the use of this map?"

Zhang Yuan wanted to explain, but suddenly he thought of something, went back to open the bed board, and took out a few black stones that had been sealed in the wooden box for a long time.

"You can find this thing with this map."

As he spoke, Zhang Yuan threw a few black stones to Zhuo Wenjun.

Zhuo Wenjun took the stone and looked at it carefully, and then his face gradually changed.

"Graphite?"

Zhang Yuan nodded.

The graphite that Zhuo Wenjun said is naturally not the graphite of later generations, but a name for coal now.

These pieces of graphite are naturally the ones that Zhang Yuan dug up when he went deep into the Longmen Mountain Range.

"But what is the use of graphite for our Zhuo family?"

At this time, people did not understand these things at all, and did not know that the temperature produced by graphite combustion was much higher than the charcoal they used.

"Anyway, if you use graphite as fuel, it will make the iron ore melt faster.

If this graphite is added to the horizontal wheel water drain I made before, even if the Zhuo family takes wrought iron and puts it directly into the furnace, it can be turned into molten iron. ”

At the current level of the Dahan smelting process, only the iron ore can be melted, and then they are slowly removing impurities.

Zhang Yuan's statement directly gave Zhuo Wenjun hope that graphite and the horizontal wheel water row could raise the temperature of the furnace by another grade, and the steel smelted would naturally be better than the Huang family's.

Slowly take it back from time to time, and it won't be a problem.

"Ah Yuan, thank you."

Zhang Yuan smiled, anyway, he didn't know when this thing would work in his hands, so it was better to let Zhuo Wenjun pick it up.

"It's nothing, just one thing to be aware of.

The profit of graphite is even higher than that of paper, and you must persuade Zhuo Wangsun not to sell it.

Once targeted by others, the Zhuo family will not be able to keep those graphite mines. ”

Zhuo Wenjun nodded, she naturally understood the stakes.

"Otherwise, I'll find a backer.

There is a big mountain behind the Huang family, and if the Zhuo family is helpless, even if they can achieve a temporary victory, they will not be able to maintain it.

Do you have any good recommendations? ”

Zhang Yuan's eyes narrowed, and he thought of the key in an instant.

"Whoever the Huang family's backer is, let's look for whomever it is.

You ask Lao Zhao to get into the carriage tomorrow to meet Wei Qing, and let Wei Qing take you to see Her Royal Highness the eldest princess.

I think Her Royal Highness the eldest princess should also be interested in graphite, so that it can also limit your father's ambitions.

Her Royal Highness the eldest princess was pressed above, and he didn't dare to sell graphite if he gave King Zhuo ten dares. ”

Zhuo Wenjun nodded, although Zhang Yuan had damaged Zhuo Wangsun so much, she didn't feel a trace of discomfort in her heart.

"Okay, I'll go to Chang'an City tomorrow.

I'm afraid that Her Royal Highness the eldest princess will not see me, the daughter of a businessman. ”

"It's okay, in the face of interests, there is no distinction between officials and businessmen.

Just go as long as you go, and with Wei Qing here, he will definitely help you. ”

Zhuo Wenjun's eyes were now full of tenderness, and he didn't know what to say when he looked at Zhang Yuan, so he had to squeeze out a few words in the end.

"Ah Yuan, you're so nice."

Then he immediately stood on tiptoe and gently kissed Zhang Yuan on the cheek.

Zhang Yuan was stupid, he had never enjoyed such an intimate act.

"Am I here at the wrong time, master?"

Suddenly, there was a voice outside the door, Zhang Yuan and Zhuo Wenjun looked back and found that it was Lao Zhao standing in the stairwell.

"Ahem, nothing.

Why did you come up, you didn't even make a sound when you walked. ”

Lao Zhao was embarrassed at the moment, so he had to lower his head and answer.

"The meal you want to prepare has been put on the first floor for you, see if you can eat it now, wait a while, the old slave is afraid that the food will be cold."

Zhuo Wenjun reacted at this time, and then said to Zhang Yuan.

"Ah Yuan, since you haven't eaten yet, then you can eat first.

I'll go back. ”

After saying that, the man ran away.

Zhang Yuan didn't come to his senses yet, touched his face, and felt that he suddenly felt like a deer was bumping into him.

But when I saw Lao Zhao in the stairwell, this feeling disappeared all of a sudden, what this old guy said was really right, and it was really not the right time to come.

Late at night, Lao Wang was suddenly called up to prepare a meal, and he didn't get any good things, just some home-cooked meals.

Zhang Yuan didn't care about it when he was hungry, he still felt quite fragrant when he ate it.

After hurriedly shaving two bowls of rice, I hurried back upstairs to have a spring dream.