C41

After happily running for a while, Lu Qing remembered what she had come here for. He hastily checked the surroundings and sure enough, he found a dry pool of water with a thick salt cover at the bottom. This was the origin of the biggest salt mine of the later generation, the precious potash mine.

After walking a few hundred meters, Luqing found an area with fewer animal tracks and began to examine the structure of the salt mines.

Not only was there the potash mine, but there was also some gypsum that coexisted with the soda mine. If she didn't have to leave Yumen, then the tofu factory could open again …

Lu Qing picked up a few clean pieces of plaster and soda and set them aside. He then began to clean up the large salt cap, which contained a large amount of silt. These were all the first things he had to filter out.

Yu Mingchuan also came to help, but at first he couldn't tell the difference between soda and salt. Lu Qing taught him to identify it for a while before he finally figured it out.

By the time Fang Jiming and his gang arrived, Lu Qing and Yu Mingchuan had already picked up a huge pile of salt.

Lu Qing wasn't able to see the flatbed carriage, but he was somewhat puzzled to see that the group of people had brought their belongings with them. She had asked for a huge iron pot, fine linen, and charcoal.

"Defend your ears and ears. Let's do it here."

Yu Mingchuan explained as he held onto Lu Qing's hand.

Lu Qing nodded his head and began instructing a group of people to gather firewood, set up a pot, and boil some water.

These people were extremely quick. After a while, they were all ready to boil the water.

After the salt was dissolved, they would filter it out with gauze and charcoal, then heat it with cold water for a few times. After that, they would leave the separated crystals alone and burn them dry. After repeating this a few times, the dirty salt turned into two types of salt, both of them as white as snow.

There was also something that looked like salt, but Lu Qing threw it away.

While Lu Qing was making the salt, these people didn't even dare to blink, afraid that they would miss out on something. However, like this, they still didn't know why they had to go through cold water and hot water repeatedly after cleaning themselves with charcoal gauze.

Lu Qing contentedly tasted the sodium salt she separated. The bitter taste was almost gone, perfect.

"This part of the salt can be eaten. As for the rest, if I sprinkle them into the fields, it will help the crops grow. The rest that I threw away will be thrown away."

Everyone stared blankly at Lu Qing. Yu Mingchuan was the first one to stretch out his finger and taste the salt Lu Qing had just eaten.

It was salty, not bitter, better than the salt they had eaten before.

"Hehehehe …"

A burst of deep laughter came out from Yu Mingchuan's mouth. Soon after, it became bigger and bigger, causing all the birds on the poplar tree to scream and fly away.

Although Fang Jiming was expressionless, his eyes betrayed his thoughts.

Steadily, he walked over to the pile of salt and also tasted it. His face was filled with shock and ecstasy.

Liu Chen was naturally unwilling to accept this. He grabbed a handful of salt and put it into his mouth, his face creased by the pain.

"We have salt!"

The group of people cheered as they grabbed onto the salt and threw it into their mouths. Even Lu Qing was unable to stop them.

Yu Mingchuan had already stopped laughing, but he still maintained his smile. He pulled Lu Qing, who was anxiously obstructing the guards from eating the salt, into his arms.

"Luqing, don't go."

Hearing this, Lu Qing's mind exploded. This guy was going back on his word!

"We agreed that if I solve the problem of your salt, you will let me go outside!" Luqing struggled with all his might, but this fellow's arms were like iron, and he didn't move an inch.