For a soldier king like Lü Tu, basic chemical knowledge like making soap was child's play.
Later, when he has time, he can make gunpowder anytime. After all, saltpeter is easy to find. It is mostly found in the soil at the base of walls in corners of outhouses, cattle pens, and supermarkets, and it is also easy to find in various rock crevices.
Secondly, there's charcoal and sulfur. These shouldn't be hard to buy. The most important thing is that Lu Tu has now married Wang Miaoling. With the Wang family's century-old business background, getting these things is a piece of cake.
Soon, under everyone's watchful eyes, Lü Tu mixed the oil and lye water and heated it. The next step was to cool it down.
Nangong Huiyu asked curiously, "Husband, what is this?"
Lu Tu explained, "This is a good thing. You can use it to wash your hands and bathe, and you can also use it to wash clothes. It will make your clothes extra clean after washing."
"Is it even cleaner than soapberry?" the maid Aqiao couldn't help but ask curiously.
Lu Tu nodded: "Theoretically speaking, nothing can clean better than soap." Of course, this is only under the premise of safety.
"So this is called soap? We've never heard of it before."
As expected of someone from a merchant family, Wang Miaoling immediately seized the business opportunity: "In that case, why don't we take this out and sell it?"
Lu Tu chuckled and gently stroked her pert nose: "Of course, but this stuff won't sell well to ordinary people. After all, people don't have much time to bathe or wash clothes. It can only be sold to wealthy families, and with the current turbulent situation, wealthy families don't have much demand for soap either."
Upon hearing this, a hint of regret flashed in Wang Miaoling's eyes. As the sole heir of the Wang family, even though she had never said it, Lu Tu supported her. Wang Miaoling desperately wanted to revitalize the Wang family, especially in business.
Since Wang Miaoling brought so much dowry, Lü Tu naturally wouldn't disappoint her. He then changed the subject, asking, "Cuiguo, do you have any flowers or anything like that?"
"Yes!" Cuiguo ran into the room, brought back many wildflowers, and handed them to Lü Tu: "These are for Miss."
As expected of a young lady from a wealthy family, she needs flowers to embellish her life even when living in the village. It's obvious that she has never experienced hardship, but Lu Tu will not force Wang Miaoling to suffer.
He's not that perverted. Someone married him, and he wouldn't force her to go from a pampered young lady to a miserable little bitter gourd.
As soon as the flowers were brought over, a hint of joy flashed in the eyes of the women, including Song Yuxi. Even though they had all married Lü Tu, they were still young girls, and it was only natural for them to like these beautiful things.
Lu Tu and the others smiled mysteriously: "Do you like the smell of flowers?"
They all nodded in unison: "We like it!"
"Alright, I'll give you something fun."
As he spoke, Lü Tu took out a small earthenware jar, scooped out a jarful of the liquid he had just mixed, and then picked the fresh flowers and tore them to shreds right in front of them.
Seeing how brutally Lü Tu treated the blood, even though the men usually obeyed him, they couldn't help but pout and ask, "Husband, why do you do this?"
Lu Tu chuckled: "You'll find out soon enough."
He then poured the flower juice into the soapy water, stirred it thoroughly, and nodded, saying, "It's done. Now we just need to wait for this to cool down, and the soap will be ready!"
Even though Song Yuxi and the others believed Lu Tu's words without a doubt, they had never seen such an operation before. After all, in this era, only alchemists would study chemical knowledge, let alone the fact that the four of them came from wealthy and powerful families.
Even Nangong Huiyu, being the White Lotus Saintess second only to one person, naturally wouldn't bother learning this kind of knowledge.
Fortunately, Wuchuan is located in the north, where the temperature difference between day and night is extreme, and the soap was cooled down in less than half an hour.
Seeing their enthusiasm, Lu Tu realized that their daily lives were quite boring, so he explained as he spoke: "This can already be called soap. Take a piece and use it to wash your hands and face. After applying it evenly, you can easily scrub away dirt."
Upon hearing this, a hint of doubt appeared in the eyes of the women. They had all grown up being served by servants. Even though their families were so powerful, bathing was nothing more than sprinkling flower petals on the floor. They needed maids to help them scrub their backs, and each time it was so painful.
Therefore, in their preconceived notions, they cannot imagine the effects of soap until they have seen them firsthand.
When Lü Tu took out his dagger, cut a small, square piece of soap from the soap pot, and then wet his palm in front of the others.
"My wife, look here."
The group was curious, but they also remembered Lu Tu's earlier warning to keep them away for the time being to avoid contracting smallpox, so they craned their necks and looked on.
Lu Tu's hands, which had originally looked somewhat dark, suddenly started to bubble after he applied the soap!
"How amazing! There are actually bubbles!" Nangong Huiyu exclaimed.
"The most amazing thing is yet to come."
After Lü Tu applied the soap evenly, he casually set it aside and let Cui Guo rinse his hands with water.
Wang Miaoling asked curiously, "Husband, there's no difference, is there? Soapberry can do the same thing."
"Look." As he spoke, Lü Tu gently pushed his hand and easily rubbed off a whole strip of filth.
The maids standing nearby immediately exclaimed in surprise. They were used to washing clothes all the time, and to achieve such a cleaning effect with just a few swipes was simply too amazing.
After casually rubbing his hands together a few times, Lu Tu finally rinsed off the mud with water. His palms seemed several shades whiter than his arms, showing that he didn't usually wash his hands carefully.
Even he himself lamented that he was still living too carelessly. Now that he has two wives, and both of them are pregnant, he needs to pay more attention to hygiene.
At this point, they were all stunned. Usually, when they took a bath, they would simply rinse with water and that was it. If they wanted to scrub off the dirt, they had to ask someone for help, which was quite embarrassing.
But seeing how easily Lü Tu had washed his hands clean, the financially savvy Wang Miaoling exclaimed excitedly, "Husband, if this thing were sold in Longcheng, it would fetch at least one tael of silver per piece!"
Lu Tu gave a wicked smile: "This is nothing! Ladies, look at this."
As he spoke, Lü Tu cut the soap, which was mixed with flower juice, into four equal parts and handed them to the four of them, saying, "Try washing your hands with this."
Having witnessed the effects of the soap, the group was eager to try it out. Seeing that Lü Tu showed no favoritism towards anyone, they were even more delighted to take the soap and try applying it to their hands.
After they finished washing, they exclaimed in unison, "Husband, we smell so good!"
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