It's not just Cai Rujin who is interested.

    The news about Chen Yun buying a large amount of supplies spread all over the Changdao Temple in the afternoon.

    That evening, several people found Chen Yun to ask about it during dinner.

    For example, Li Si at the same table, "Chen younger brother, you are really preparing to do something?"

    Not far away, Wang Siyan, Yu Leping, and Tang senior brother and others were constantly glancing in their direction, eager to know as well.

    Unfortunately, Chen Yun didn't prepare to reveal it at all. He just smiled and said, "Secret, you'll know it later."

    Ding senior brother couldn't contain his excitement either, "Just tell us, Chen junior brother. We are really curious."

    Chen Yun still didn't reveal anything.

    This wasn't because he was hiding something.

    But he was afraid that the production would fail, so he didn't want to let everyone laugh.

    He's just like that, not fond of making a fuss before things are accomplished.

    In the end, people couldn't ask anything else and went back to their rooms for dinner.

    On the way back, the crowd was still chatting.

    "Siyan, you're clever and quick-witted. What do you think Chen junior is planning to do?"

    "I really can't think of anything."

    "He behaved strangely today, which really aroused people's curiosity."

    "Indeed, just you wait, we should know in a couple of days."

    As they talked, the group gradually drifted apart.

    Chen Yun was different from others.

    After eating, Chen Yun did not leave the cafeteria but sought help from Ning senior.

    Ning senior agreed to help because he had already received several liang of silver from Chen Yun during the day.

    The two were busy in the kitchen.

    Chen Yun was pouring the grass ash into a large wooden basin filled with water while directing, "Ning senior, help me filter out the impurities in the oil with a drawer cloth."

    He spoke in a somewhat modern way, but Ning senior could understand, "OK."

    As he said, Ning senior began to filter the oil with the drawer cloth.

    Drip, drip.

    Drop by drop, the filtered oil dripped into a prepared ceramic jar.

    Chen Yun, on the other hand, stirred the clear water mixed with grass ash together and then poured it into a large iron pot.

    Cover the lid.

    He squatted behind the earthen stove to burn the firewood.

    Since both were busy, they didn't speak.

    After boiling for a while, the water in the pot with grass ash started to boil.

    Chen Yun did not stop the fire, but kept burning for about ten minutes.

    The fire ended.

    He stood up and poured the boiling grass ash water out, placing it in a large wooden basin.

    At this time, Ning senior was still filtering the oil.

    Chen Yun picked up the simple distillation device made by Wang Zaixi for himself.

    He poured the strong wine into it a little by little.

    Then he put cold water into the pot.

    Then he put the simple distillation device into it.

    He went back to the earthen stove behind to burn the firewood again.

    Gradually, the water in the pot started to boil.

    The alcohol in the simple distillation device also separated from the liquid and turned into a group of vapor that rose.

    The boiling point of alcohol is less than 80 degrees, while that of water is 100 degrees.

    The simple distillation device is placed over boiling water to evaporate the alcohol, which has a lower water content. By distilling several times, high-purity alcohol can be obtained.

    Refining alcohol is quite time-consuming.

    It took Chen Yun more than an hour to finish distilling.

    After that, he cleaned the simple distillation device as well.

    Then he added petals into the distillation device.

    Approximately half full.

    Chen Yun then added water into it.

    When the water in the distillation device covered the petals, he began to heat the distillation device.

    Soon, the distillation device boiled.

    As the water began to boil, steam was produced.

    These steam passed through the pipe into another small porcelain bottle container and gradually cooled down.

    Suddenly, while filtering the oil, Ning senior brother sniffed and said, "Chen junior brother, it's very fragrant. Are you making rose dew?"

    Rose water is an ancient perfume, with a complex production process.

    Of course, the price is extremely high, and most people can't afford it.

    Chen Yun was still burning the firewood in the earthen stove. He was currently refining floral oil, so the smell naturally smelled very fragrant.

    He replied with a smile, "The rose water is just part of it. My main goal is to make something else."

    Ning senior brother had been busy for so long and was really curious to know what he wanted to make. He asked eagerly, "What are you planning to make? Let me know, I won't tell anyone here. There are no strangers here, so you can relax."

    Looking at Ning senior brother's sweaty head and oil spots on his clothes, Chen Yun thought for a moment and finally told him, "I am making soap."

    Yes.

    Chen Yun is making soap!

    Some people may not know that in ancient China, there was no real soap, only soap beans, bean soap and other things used to clean clothes and bodies.

    These two items were not ordinary expensive; only wealthy families could afford them, making them real luxury goods.

    For example, the fragrant soap, originally only used by the palace.

    There was a prince who did not recognize the good quality of the fragrant soap on his wedding night and ate it as food.

    Furthermore, even though the background of "Dream of the Red Chamber" may be during the Ming and Qing dynasties, when the fragrant soap was not as rare, it was still considered a luxury item.

    It can be imagined that the fragrant soap in this era is worth a lot, similar to the Tang Dynasty on Earth.

    Chen Yun wanted to earn enough silver, about four or five hundred liang, in a short period of time. Therefore, the potential customer base naturally could not be ordinary people. He had to take an upscale route.

    Soap and perfume are just the kinds of material needs that wealthy households in ancient times have just begun to seek.

    Chen Yun believes that as long as he can produce soap and perfume, it will be easy to earn enough silver, about four or five hundred liang.

    After all, the fragrant soap is expensive.

    A soap that is more advanced than the fragrant soap should also be able to sell at a high price.

    "Soap?" Ning senior brother's hand filtering the oil paused, quite puzzled, "Soap doesn't use soap beans, right? Are you forgetting to buy soap beans?"

    Chen Yun laughed heartily, "I can't explain it to you now. Wait until the things are made, and you'll know."

    Ning senior brother could only sigh and continue with his work.

    It took half the night to work.

    In the end, there were several pots and jars filled with oil and water in the kitchen.

    As for the alcohol that had cooled down, it was more volatile.

    Chen Yun was afraid to waste, so he specifically used a jar used for storing wine to seal it.

    After finishing the work, it was already midnight.

    Chen Yun and Ning senior brother were exhausted, so they said their goodbyes and went back to their rooms to sleep.

    The two of them left.

    But about half an hour later, a shadowy figure appeared in the kitchen.

    It was Cai Rujin, whose curiosity was at an all-time high.

    He has profound cultivation that he can still see clearly even in the absence of lights in the kitchen.

    Cai Rujin looked at the pots, bowls, and pans filled with various liquids on the ground and was even more confused. "What the hell is this kid up to?"

    He watched for a long time, unable to figure it out.

    Cai Rujin simply didn't care to try to figure it out and turned around to go back to his room to practice.

    Suddenly, he saw several wine jars placed on the stove.

    "Hmm, it seems to be from Xu's Winery; their wine tastes quite good. I'll pour a small bowl to taste."

    Cai Rujin slightly indulged in alcoholism.

    Although the house was full of things, he avoided them when walking.

    He reached the stove.

    He picked up a small bowl and opened the lid of one of the wine jars at random.

    A strong wine smell arose.

    "Huh, what a fragrant wine smell!"

    Cai Rujin's lust for alcohol was almost aroused.

    Cai Rujin couldn't wait to pour a small bowl of wine, then he looked rather puzzled, "This wine is so clear. Isn't Xu's Winery selling yellow rice wine?"

    Although it's a bit confusing, Cai Rujin thinks that such clear and odorless wine with a strong fragrance should be Xu's new product.

    He lifted the bowl and drank it in one go.

    Then...

    "Wow!"

    Cai Rujin stuck out his tongue and spat out all the wine.

    Nima! ( damned!)

    What the hell kind of wine is this?

    It almost burned his mouth to death!

    In that moment, he had the urge to kill!

    Yeah, he had no idea that this was the alcohol that Chen Yun mentioned earlier.

    ……

    The next night.

    Chen Yun and Ning senior brother began to work again that night.

    He first added the filtered oil into the container.

    Then he added the alkali water made from the grass ash water and the alcohol.

    He mixed the three things together in a proportionate manner.

    He heated it and constantly stirred.

    Chen Yun stirred while observing.

    When the situation was about right.

    He then added saturated salt water.

    Gradually, the solution in the pot began to boil, and a pale yellow precipitate appeared.

    The precipitate is soap.

    He filtered out the material.

    He added honey and the extracted floral essential oil.

    Then he put it into the mold.

    After cooling down, he placed it there for a few days. The soap could be used after that.

    Additionally, there was the remaining solution. He removed the impurities to obtain crude glycerin.

    Then Chen Yun began making perfume.

    The homemade perfume is relatively simple compared to making soap.

    He added alcohol, distilled water, floral essential oil, glycerin, and a series of other substances into the jar and then sealed it.

    Perfume needs to settle for a while before it can be used.

    Currently, it is not yet possible to make money from it.

    It can be said to have been made by the way.

    ...

    Three or four days later.

    A sensational event occurred at the Taoist temple.

    Each person received a small bar of soap.

    At first, everyone didn't know the purpose of soap, but after listening to the introduction and trying it, everyone was excited.

    Especially the two girls, Wang Siyan and Yu Leping, were exceptionally excited.

    "My god, this soap makes my body smell so good after a bath."

    "That's true. I usually work with black and greasy hands, which are difficult to wash. Now it's better. Using soap, not only my hands are clean, but there's still a lingering fragrance."

    "Chen junior brother is really wise."

    "Yes, it's amazing that something like soap can be made. He really is a genius."

    Zhang Qian, Li Si, Tang Brother and Wang Siyan were discussing.

    Even Wang Zixi, who was usually cold in temperament, couldn't help but show a joyful expression after receiving the soap.

    It can be imagined how much everyone loved Chen Yun's invention of soap.

    Indeed, the laborers at the Taoist temple are not rich and cannot afford fragrant soap.

    Naturally, everyone was amazed when they received the magic soap.

    Of course, at the moment, Chen Yun couldn't hear the voices of others discussing him.

    Because he just arrived at the Magical Formula Hall.

    Chen Yun placed a small bar of soap on the desk in front of Cai Rujin as soon as he entered the hall, "Senior Brother Cai, I've been in the Hall of Magical Formula for several days. I appreciate your care and I bring a small gift as token of my respect. Please accept it."

    Cai Rujin was a bit puzzled when he saw the soap.

    He asked, "What is this?"

    Chen Yun said, "Soap."

    Cai Rujin furrowed his brow and said, "Soap? I remember that soap doesn't look like this."

    Chen Yun explained somewhat, meaning that this was the soap he invented himself, which is different from the soaps commonly sold in the market, and it has stronger cleaning functions.

    Cai Rujin was still skeptical and tried it.

    After washing his hands with the soap, he found that the cleaning effect was indeed very good, and there was even a trace of lingering fragrance.

    This made Cai Rujin, who had just finished making it back to the front of the case, staring at Chen Yun for a long time before slowly saying, "You are so intelligent, you shouldn't have used it for this."

    "Thank you, Senior Brother Cai, for your guidance. Yun will not waste too much time making these small trinkets."

    Chen Yun smiled and replied, "Lately, I've been thinking about making some money to buy the Hongxue lychee fruit, so I've spent a bit of time on it."

    Cai Rujin's gaze softened, and he sighed, "Well, from tomorrow onwards, I will teach you how to draw magic formulas."

    At this moment, Cai Rujin felt a sense of guilt in his heart.

    After all, he had been secretly trying to put Chen Yun in a difficult situation.

    The other party had spent several days making the soap, yet he gave it to Chen Yun as soon as possible.

    This made Cai Rujin feel somewhat embarrassed.

    To oppress the young by the old is not the way of a gentleman.

    Maybe it was a sense of guilt.

    In that moment, Cai Rujin no longer found Chen Yun as hateful.

    On the contrary, he felt that Chen Yun was intelligent and quick-witted, a person with potential who should not waste his intelligence on trivial matters like inventing soap.

    He decided to take time to guide him a bit.

    Hmm, and the Hongxue lychee fruit.

    Let's give this kid both of them tomorrow.

    Although Cai Rujin knew that Chen Yun had made such a wonderful soap, he could definitely make a lot of money from it and buy the Hongxue lychee fruit.

    However, it takes time to sell things, and it's not possible to gather enough money all at once.

    Whether it's the excellent talent he showed in his previous cultivation or the wisdom he demonstrated in making soap, Chen Yun's achievements are worthy of obtaining the Hongxue lychee fruit.

    Therefore, Cai Rujin had decided that tomorrow, when Chen Yun came to the Hall of Magical Formula in the afternoon, he would give him the Hongxue lychee fruit so as not to delay Chen Yun's cultivation progress.

    He is a young man with exceptional talent and an impressive intellect.

    Cai Rujin had completely changed his mindset.

    He no longer intended to bully Chen Yun but instead wanted to cultivate him carefully.