He was betrayed at the beginning, from a cake seller to a wealthy person

Lu Yan's heart was moved for the first time in her two lives. When she turned around and looked at Lu Sheng again, her mood had calmed down.

She was very curious about what touched her. She had seen Lu Sheng in almost all his aspects, sunny and cheerful, youthful, witty and intelligent, and high-spirited. But this time, his miserable state was the only thing that moved her. She herself found it incredible.

Lu Yan thought for a while but couldn't come up with anything. Seeing that she was back to normal, she simply stopped thinking about it. She shook her head and said directly to Lu Sheng: "I just came to see you and tell you that I'm back. I have a lot of things to do there, so I'll go back now."

Lu Sheng was surprised: "Are you leaving again?"

Lu Yan nodded, climbed onto the horse, waved and pulled the reins, "See you tonight!"

Lu Sheng stood with his hands on his hips and looked at Lu Yan's back for a while, wiped his face with the back of his hand, and jumped back into the pit to continue working.

Before Lu Yan came back, she asked Xiao Tu to keep the three people who were building the house, and let Pang Zhongqing take the rest away.

When Lu Yan came back, she didn't do anything extra. She just asked them to build a house next to Xiao Tu's yard. She wanted to use it as a laboratory. It happened to be close to the government office, so it was convenient for her.

While the house was being built, she also had to make some experimental equipment. Now that there was no glass, she had to think about what to use as a substitute.

Before the laboratory was built, Lu Yan and Xiao Tu worked in the yard. Anyway, Lu Yan's main job now is to make activated carbon.

Activated carbon is a variation of charcoal. Charcoal is cremated using physical or chemical methods to create more micropores and increase its adsorption capacity.

In fact, ordinary charcoal already has a certain adsorption effect, especially charcoal made from fruit shells. However, it is really difficult to collect enough fruit shells at once, so you can only accumulate some over time.

Rinse the ordinary charcoal, dry it, and crush it for later use.

The most direct way to make activated carbon is to activate the crushed charcoal with hot steam. What is superheated steam? The water vapor we usually see is called saturated steam, and its temperature does not exceed 100 degrees. If the water vapor is further heated and completely gasified, the temperature will be higher than 100 degrees. At this time, the steam becomes extremely destructive and can easily ignite a fire.

Lu Yan specially asked a blacksmith to make a metal heating container, a long spiral tube, one side of which was connected to a kettle that could be opened and tightened, and the other side was connected to a jar that could also be opened to add crushed charcoal.

Add water to the kettle, put charcoal in the jar, and heat the kettle, pipe, and jar at the same time. The water is heated to produce steam, which enters the pipe and is heated by the fire in the pipe to become superheated steam. The superheated steam passes through the pipe to the jar, activating the charcoal being heated and turning it into activated carbon.

The activated carbon looked the same, but its filtering effect was amazing. Xiao Tu tried filtering a bowl of muddy water and was stunned by the clear water that came out.

Lu Yan made activated carbon to process beet syrup. She had just harvested a bunch of beets and made several jars of beet syrup. The impurities in the syrup can be removed by filtering it with activated carbon.

Xiao Tu took a sip of the filtered thin syrup and found that it no longer had the astringent taste unique to betaine.

Pour the filtered beet syrup into a small pot and heat it, stirring constantly to concentrate it. When the foam that floats up becomes fine, turn down the heat and simmer it slowly until the syrup begins to string. Remove from the heat and pour it into a container while it is hot. After cooling, it will become a caramel that is thicker than honey.

Caramel has a high density and it is difficult for microorganisms to grow. As long as it is kept away from moisture, it will not deteriorate for a long time and can be stored for a long time.

Xiao Tu watched Lu Yan boil several cans of thin syrup until only one bowl of caramel came out. He frowned and said regretfully, "There is only one bowl of caramel from so much syrup. What a waste."

Lu Yan didn't say anything. She picked up a tip with chopsticks for him to taste. Xiao Tu put it in his mouth. The mellow and rich sweetness instantly exploded in his mouth. He opened his eyes wide and no longer had any objections.

After such a long time of preparation, it still makes sense.

Xiao Tu watched Lu Yan turn the beetroot from a round, radish-like lump into a bowl of caramel, and carefully wrote down each step in a notebook. Lu Yan gave Xiao Tu the task of processing the beetroots to make caramel, and asked him to make all the sacks of beets he brought back from the forest.

Lu Yan went to study the beet seeds. She originally wanted to build a greenhouse like she did in Hengzhou and plant some of them first regardless of the climate. But beets are biennials, so it's not a big deal to plant them a few months early. It would be better to plant them directly in the field next spring.

Lu Yan figured out the matter and stopped bothering herself with it. She put the beet seeds away.

Lu Sheng came back in the evening, his body and face covered in dirt, looking extremely dirty. He couldn't wait to carry two buckets of water into the house to take a shower before even eating.

Lu Yan made dinner while Lu Sheng was taking a shower. She had been busy since she came back and had no time to buy groceries. She simply soaked a handful of dried mushrooms that she had dried earlier, fried some mushroom sauce, cooked a pot of noodles, and ate them together.

Lu Sheng took a shower and changed his clothes. He didn't even have his hair completely dry when he started to rush in. He was really tired and hungry after a day of physical work. He quickly ate two bowls before slowing down. He ate the third bowl slowly while talking to Lu Yan: "What have you been busy with since you came back?"

"I made something good. Wait for me to show you." Lu Yan smiled mysteriously, went to the kitchen and brought out a bowl of caramel, and placed it in front of Lu Sheng: "Try it."

Lu Sheng stretched out his chopsticks and dipped them in the bowl, then picked up a piece of caramel the size of the chopstick tip. The sticky caramel stretched into long sugar threads.

Lu Sheng took it hesitantly and put it into his mouth. His eyes widened instantly: "This, this, this! Is this what you made with beets?"

Lu Yan smiled and said, "Smart!"

Lu Sheng showed his surprise without hiding it: "Great! If this is traded, it will be very profitable!"

Lu Yan interrupted his fantasy: "But this thing is a two-year-old plant, and it takes a long time to sow. If you want to develop an industry, you need a long preparation time."

Lu Sheng was even more surprised: "You mean you can grow it? I thought we could only go to the forest to pick this thing. It's great that we can grow it ourselves! You are amazing!"

Lu Yan was stunned when she heard this, and then she smiled helplessly. She was also convinced, why did Lu Sheng hear everything as good news?