After seven years of fiefdom, Li Shimin asked me to return and become the crown prince.

"Talking about business?"

Li Shimin and his companions were stunned. This must be the reason why Li Kuan invited them to dinner.

"We have some special products in Lingnan that we want to sell in Chang'an, so we need a channel in Chang'an!" Li Kuan replied calmly, but added:"But you need my people to control the business in Chang'an, and then I will share the profits with you!""

"Channel?"Li Shimin didn't understand what Li Kuan meant.

"That is, we will go to Chang'an to run a business, borrow your identity, and then give you 10% of the profits!" Li Kuan went straight to the point and told them about his plan to find a few people.

Simply put, Li Kuan wanted to find someone to protect him, after all, the capital city is prone to being ambushed.

Li Shimin became interested:"What good stuff do you have? How do you plan to divide it?"

Li Shimin wanted to see what Li Kuan was up to.

"That's easy!"

Li Kuan had obviously expected it. As he clapped his hands, several people walked into the private room with trays covered with red cloth in their hands:"Show it to you!" As soon as he finished speaking

, the first person who came in opened the red cloth, revealing a transparent glass cup, colorful glass beads, and a piece of transparent glass.

The moment the things appeared, Li Shimin and his companions' eyes widened.

The transparent glass bottle was not enough, the patterns inside the colorful glass beads were too beautiful.

"How many of these glass beads do you have?"

Li Shimin asked

""You can have as many of these as you want!" Li Kuan said disapprovingly, very generously.

Cheng Yaojin was also attracted by the exquisite glass products:"Have you found the glass mine?"

"What is colored glaze ore? This is glass. What is produced in Lingnan, you can also call it colored glaze!"Li Kuan laughed. The ancients were very obsessed with colored glaze.

What is produced? Man-made.

So it is not expensive?

"How much is this thing worth in Lingnan?" Li Shimin picked up a glass bead and asked tentatively?

"Glass beads? You can buy ten for one penny, but this kind of thing is not for sale in Lingnan!" Li Kuan stretched out his two hands, but then said:"Then how much do you think this thing is worth in Chang'an City?"

This kind of luxury, the people of Lingnan don't need such flashy things, so leave it to the nobles in Chang'an City to enjoy.

"At least ten taels!" Li Shimin was very decisive

"What about glass bottles and glass?" Li Kuan asked.

"No less than fifty taels!"Li Shimin said with certainty, and this was Wang Cheap, because there was also a glass cup in the palace, which was worth 500 taels. He used it to drink water and taste tea every day.

The one used on the window would not be cheap either.

"Ha ha...Let's put it this way, these two things are also available in any quantity you want!" Li Kuan laughed.

What?

Still available in any quantity you want.

So, these two things are also mass-produced.

No wonder the houses in Lingnan City all use colored glaze as windows....No... it's glass.

Thinking of this, Li Shimin thought of the glass cup in the palace, and it instantly lost its fragrance.

The crystal cup in the palace is also a common item here.

"What is the second one?"After seeing the first few things, Li Shimin was very interested in the latter ones.

I wonder what they are?

"Open it!" Li Kuan signaled the second person to open the red cloth.

Below were two glass bottles with white crystals inside.

"What is this, salt?"Li Shimin was full of doubts. The two crystals were too white. If they were salt, he was really a little unsure.

Even the refined salt in the Tang Dynasty had impurities, not to mention the inferior salt. He was not sure if it was salt.

"You can have a taste!"Li Kuan waved his hand and asked someone to pass the plate to Li Shimin.

Li Shimin looked at the two things and was about to reach out to touch them and taste them.

But as soon as his hand moved, he was stopped by Liu Renyuan. As Li Shimin's bodyguard, he could not let Li Shimin try it himself.

Liu Renyuan touched a crystal in a jar with his hand and put it in his mouth.

In an instant, he felt the salty tip of his tongue trembling, and he quickly spit out the salt.

"It's salt!" Liu Renyuan looked at Li Shimin.

"Salt?"Li Shimin and Cheng Yaojin looked at each other, shocked.

"I, Old Cheng, will try it too!" Cheng Yaojin was not polite, he reached into another bottle, took out a little and put it into his mouth.

Uh~~

Cheng Yaojin narrowed his eyes, tasted it carefully and swallowed it, looking like he was enjoying it. Sweet?

He thought he had tasted the wrong thing, so he took another bite and it was still sweet.

"Old Liu, did you taste it wrong? Why does it taste sweet to me?" Cheng Yaojin stared with big round eyes and said indignantly

"Sweet?"Liu Renyuan was also stunned, but he still tasted the crystals in Cheng Yaojin's cup. It was really sweet.

Sugar?

Li Shimin looked at the expressions of the two people, and couldn't help his curiosity. He took a little from each of them and tasted it.

Sure enough, one was salty and the other was sweet.

Salt, and sugar?

But how could the two be so pure.

The three of them looked at Li Kuan.

Li Kuan smiled mysteriously and said calmly:"You don't have to guess, this is salt and sugar!"

Sure enough, it was salt and sugar.

Although the result was expected, there was still surprise on his face.

In their cognition, salt and sugar were different. How could these two crystals be so pure.