Upon hearing the word "cement," Li Tai's face immediately filled with melancholy.

In fact, Li Tai had been eyeing the cement formula for a long time. Not only was his wife urging him to get it, but his father-in-law also said that if he couldn't get the cement formula, he would disown him as his son-in-law!

Unfortunately, Li Jue just wouldn't give it to him, no matter how much he pleaded and begged.

This made Li Tai very frustrated, and he couldn't quite understand it.

They readily give away such a powerful formula for gunpowder, so why are they so stingy with the formula for cement?

"Nephew, just give me the cement formula. You have no idea, my father-in-law has been urging me for it for days..."

Li Jue chuckled upon hearing this.

"No way!"

"This is something I planned to pass down as a family heirloom!"

Li Tai was so angry when he heard this that he glared at him.

"What family tradition are you passing down?"

"The entire Tang Dynasty will be yours in the future, why would you need cement as a family heirloom?"

Li Jue laughed again upon hearing this.

"Even if I don't use it, my brother will!"

"As long as my brother has the cement formula, he'll be rich for generations to come, hahaha!"

Li Xiang didn't take these words to heart. In fact, he had never lacked money since he was a child, or rather, royal children had no concept of money.

"Second brother, I don't need that much money. I'll be happy as long as you're doing well!"

"Brother, you don't need to worry about this. I have my own ideas!"

Li Xiang didn't understand the importance of cement, but Li Tai really did.

Actually, the Tang Dynasty did have something similar to cement; glutinous rice paste and mud could achieve a similar effect.

But glutinous rice is too expensive, far less expensive than cement.

Moreover, cement is not only inexpensive, but its strength is also significantly greater than that of glutinous rice paste. In addition, cement does not attract insects, unlike glutinous rice paste which requires insect prevention measures, giving it a greater advantage in construction.

"well!"

"Can't I just pay for it...?"

When Li Jue heard that Li Tai was spending money to buy it, his eyes lit up immediately.

"Fourth Uncle, how much money are you planning to spend?"

Li Tai shook his head upon hearing this.

"I won't name a price. Just tell me. As long as I can afford it, I won't haggle!"

Upon hearing this, Li Jue lowered his head and thought for a moment before replying.

"How about this, I'll charge you 100,000 strings of cash a year and give you exclusive rights to sell it for three years."

"What?"

"Ten thousand strings of cash a year?"

Before Li Tai could even speak, Li Xiang was already stunned by Li Jue's price.

However, what puzzled him even more was that Li Tai not only didn't dare to bargain, but seemed to be afraid that Li Jue would change his mind.

"make a deal!"

"I'll have someone send you the money in a little while!"

"I'll give you one million strings of cash, but you have to buy out the cement formula completely!"

Li Xiang asked, somewhat puzzled.

"Fourth Uncle, I know the cement formula. That stuff isn't worth that much money at all!"

"If you really want it, I can tell you right now!"

Li Jue smiled slightly upon hearing this.

"Brother, even if you tell Uncle Si, he won't listen. He'll still buy from me!"

Li Xiang was even more confused upon hearing this, and looked at Li Tai and Li Jue with a bewildered expression.

"Fourth Uncle, would you really do that?"

Li Tai nodded upon hearing this.

"certainly!"

"In fact, I've guessed the cement formula pretty well; the only thing I don't know is the temperature of the cement kiln and other details."

"But as long as I'm willing to put in the effort, I'll eventually figure it out if I try a few more times!"

"Uh..."

Upon hearing this, Li Xiang was completely disheartened. It turned out that his fourth uncle really knew!

"Fourth Uncle, since you know the cement formula, why did you still ask my brother to buy it?"

Li Tai smiled mysteriously upon hearing this.

You don't understand!

"I'm doing this out of respect for knowledge..."

Li Tai's words were ruthlessly exposed by Li Jue no sooner had he finished speaking than Li Tai saw through his ruse.

"Brother, don't listen to his nonsense. He's just afraid I'll copy his formula!"

"You don't know, my fourth uncle has come up with a lot of great things this year. Not to mention the various colors of glass, just the formula for mass-producing caustic soda alone makes me extremely envious. I've been thinking about copying his for a long time!"

Upon hearing Li Jue's words, Li Tai immediately became enraged and retorted.

"You dare!"

"The caustic soda formula is something I intend to pass down to Li Xin as a family heirloom!"

"If you dare to copy my recipe, I'll report you to your grandfather and have him hang you from a tree and beat you to death!"

Li Jue chuckled upon hearing this.

"Look, Uncle Si's old fox tail is showing, isn't it?"

In fact, Li Jue also knew the formula for caustic soda, but before he could figure it out, Li Tai beat him to it.

Since the other party had beaten him to it, Li Jue went along with it and attributed the credit for the caustic soda to Li Tai.

After all, he will have many more opportunities to be remembered in history. Leaving aside Archimedes' principle, just the principles of density and the three major laws of mechanics alone are enough to make him famous for all time.

Li Xiang couldn't understand what Li Jue and Li Tai were saying. After all, in the entire Tang Dynasty, only Li Tai could get along with Li Jue and listen to him explain what intellectual property was.

Li Tai established the Institute of Natural Sciences not only for scientific research, but also to establish a system in the Tang Dynasty to protect the intellectual property rights of highly skilled talents.

Although this matter was influenced by Li Jue, he himself was indeed very interested in it.

Whenever he thinks of the mighty Tang Dynasty, which could not only control other countries with its iron cavalry, but also one day use intellectual property rights to sanction any country, he feels a surge of excitement.

"Three years it is..."

"Oh, by the way, what are your plans after three years? Will you take it back and produce it yourself, or sell it to others at a high price?"

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