Huang Tinghui put the filtered plant ash into the iron pot, and then poured a bucket of crystal clear spring water into the iron pot, submerging the plant ash.

"Lian'er, burn the fire!" Huang Tinghui said to the little girl.

The little girl who got the instruction immediately lit the stick in the stove, and the flames sparkled, and the burning "popped" sound.

Huang Tinghui found a wooden stick to remove the bark, and he stirred it vigorously in the iron pot, stirring the ashes of the plants and trees in the iron pot evenly.

The little girl kept adding firewood to the stove, and the flames were burning more and more vigorously.

A pot of plant ash solution was boiled by the fire, and Huang Tinghui boiled for a while from the plant ash solution, which made the little girl withdraw the burning sticks in the stove.

"Brother Tinghui, what are we going to do next?" The little girl asked curiously.

"Next, we are going to reclaim the wasteland, we have to remove weeds, and there is not much firewood at home, I have to go to the mountains to get some firewood!" Huang Tinghui arranged the next thing to do in a few words.

"Huh?" The little girl looked at Huang Tinghui blankly, he didn't expect Huang Tinghui to give such an answer.

"Hahaha......" Huang Tinghui laughed loudly, he didn't explain to the little girl, he took some tools, and walked straight out.

No way, these can't be explained clearly!

Huang Tinghui did this just to get some very high concentration of lye, and the plant ash needs to be left for a period of time to get a high concentration of lye.

This matter is explained to the little girl, and it seems that it can't be explained clearly for a while, after all, there is a lot of knowledge in the junior high school chemistry textbooks of later generations.

The little girl glanced at the stove, and then at Huang Tinghui's back.

She placed the lid on top of the plant ash solution, and covered the pot with the lid of the clay pot filled with lard.

After doing all this, the little girl took the farm tools and began her hard work again.

Some vegetable seeds suitable for winter were carefully sown by the little girl on the wasteland that had just been cultivated.

The little girl turned over the warm clods of loose soil and pressed them on top of the vegetable seeds.

In this way, he and Huang Tinghui can eat fresh vegetables in the winter.

After doing all this, the sun had already set, and the little girl's stomach "gurgled" twice, and she realized that the sky had become a little dark.

In ancient times, people generally only ate two meals, and the same was true for the little girl and Huang Tinghui, who was still quite difficult to adapt to at first.

But after a few hungry meals, everything is not a problem.

Seeing that the sky was darkening, the little girl looked in the direction of the mountains.

Sure enough, she saw the shadow of a man carrying a lot of firewood on his back and stepping on the sunset slowly walking towards this side.

The little girl smiled sweetly, something she had never dreamed of before.

But now it's all come true!

If you can spend your life so plainly, then it will be worth it, the little girl thought.

"Brother Tinghui!" The little girl beckoned to Huang Tinghui in the distance.

Huang Tinghui walked a few steps, and soon came to the front of the dilapidated thatched house, and the little girl hurriedly opened the fence in front of the thatched house and let Huang Tinghui walk in.

"Lian'er, the time should be almost up, let's go to the kitchen and have a look!" Huang Tinghui rubbed the little girl's head, and the two walked to the kitchen.

Putting the bundled firewood aside, Huang Tinghui couldn't wait to uncover the lid of the iron pot.

The pale yellow liquid appeared in front of Huang Tinghui, and a smile appeared on Huang Tinghui's face.

That's what Huang Tinghui wants!

Boil the lye from the ashes and the lard until the fat is completely dissolved.

When the time comes, stir and heat constantly, and after the water has evaporated by half, add a little salt cube to it.

This is the finished product that Huang Tinghui finally wants.

"Brother Tinghui, is this okay?" The little girl asked nervously.

She looked a little more nervous than Huang Tinghui.

"It's okay, let's watch Brother Tinghui's tricks next!"

"Lian'er, you light the fire, my brother wants you to burn the fire." Huang Tinghui said to the little girl with a smile.

The little girl nodded when she heard this, and she hurriedly lit the dry wood in the stove with a fire breaker.

The flames immediately flared up, and the stove was immediately heated.

Huang Tinghui found a spoon, he took out the lard from the clay pot, and put it in the plant ash solution in the iron pot one by one.

When heated at high temperatures, the lard quickly dissolves.

The alkaline solution and the lard were perfectly blended together, and Huang Tinghui held a wooden stick and kept stirring the two solutions in the iron pot.

I don't know how long it took, until the water in the pot was less than half of it, Huang Tinghui put down the wooden stick in his hand.

At this point, it's almost there.

Huang Tinghui grabbed two pieces of mashed salt and carefully sprinkled them evenly in the iron pot.

Watching Huang Tinghui sprinkle salt in the solution, the little girl only felt extremely distressed.

In this era of salt and iron official camps, the price of table salt was expensive.

The little girl usually eats a little salt, she is cautious, and now seeing Huang Tinghui sprinkle salt in the milky white solution like this, it is inevitable that she will feel a little distressed.

However, the little girl is distressed, but whatever Tinghui's brother does, she has always had no principles and no reason to support.

Watch as the plant ash is mixed with lard and a little salt to make the final product.

The little girl's eyes couldn't help but widen.

I'm afraid I'm missing something.

At this time, Huang Tinghui walked to the interior of the thatched house, and he found some wooden molds that he had polished before.

Then pour those milky white solutions into the wooden mold, and Huang Tinghui's task is complete.

Next, all Huang Tinghui needs to do is wait.

After these milky white solutions are cooled and fixed, it is what Huang Tinghui wants.

"Brother Tinghui, what is this?" The little girl looked at the solution in the mold with bright eyes, she looked at Huang Tinghui like a curious baby and asked.

"In the future, when you wash clothes and take a bath, you can use these things, and the effect of this thing is good for stains!"

"You can wash your clothes and take a shower!" Huang Tinghui explained with a smile.

When the little girl heard this, her eyes lit up even more.

No wonder Tinghui's brother said that he could exchange money, so it turned out to be like this.

Who would refuse to wash clothes and bath clean things?

"Brother Tinghui, what's the name of this thing?" The little girl asked again.

"Let's call this thing soap!" Huang Tinghui smiled slightly, and he said to the little girl.

……