It's a pity that Gu Yangwen was wary of Old Man Gu and Gu Erzhu interrupting on the side.

After studying hard for dozens of years, he still didn't calculate that Gu Erzhu had actually played a trick to retreat into advance.

He still doesn't know his second brother well enough.

Gu Erzhu knew that his old son was there, and his old son might not be able to leave even if he wanted to, so he simply coaxed him to the side of the tearoom and slowly pulled.

It's like, when the children are older, we can't treat them as children anymore, right?

Otherwise, how will they grow up, and how will they know to be a good father and a good grandfather.

On the other side, Gu Wenxuan heard that Gu Dalang mentioned that Bai Juren came to the village to learn and guide, and he didn't go around in circles, and gave the answer in a long story and short.

First of all, before the Qingming Festival, Bai Juren should be in the village every afternoon to study, the afternoon is uncertain, and the evening is not there, if you want to go to the class, it is best to go before noon.

Secondly, the content of the lecture is not complicated, and each of them is assigned a question on time every day, and the problems are pointed out one by one after the review is corrected.

Finally, and most importantly, I have to review more than a dozen people's articles every day, and I have to point out the problems one by one.

Whether they listened or remembered, he basically said it once and it was over. If you ask again, let me go to Zhou Xiucai to answer.

Gu Dalang understood, Bai Juren would instruct, but if he wanted to explain it again with great patience, it would never be possible, it was worthy of lifting people.

"What about you, he said again, can you keep up?"

Gu Wenxuan immediately shook his head.

"And what about you?"

Gu Wenxuan smiled, and said how he had been reading and studying these days, and how he had been reading at night.

After speaking, he patted his forehead, and he lost his companionship, and then got together after the exam, he was now busy studying and going back to the West Wing first.

Look, I have to ask his family Rokuro to come out and settle down.

What can his family say, isn't it nonsense.

However, some people believed Bai Juren and said again, and his family couldn't keep up.

Gu Erzhu couldn't help but laugh and sent away the three old man Gu, thinking that they really thought that his family Liulang was lucky to be the head of the county case by stepping on shit.

The old man didn't think so, but even the boss and the big man couldn't see that they couldn't hear the half-truths and half-truths in his Liulang's words, and they were all polite words.

It seems that there are a lot of good and obedient words, but which sentence has been implemented, but the children who talk less are ten sentences a sentence, and they are very happy without taking advantage of the benefits.

Turning back to the inner courtyard, Gu Erzhu saw that his old son was not affected at all, and in less than a quarter of an hour, he had already buried his head in the study of the west wing and turned over the book.

Very good.

It seems that his family Liulang is still not affected by his grandfather's eccentric eyes, and he has not been affected by the arrival of Dalang, and he is worthy of being his stable old son.

Like Dae and Brother Li, he was so focused on his schoolwork that he didn't go in, he only lifted the curtain at the door, and the three of them didn't notice that he was coming.

Leaving the West Wing lightly, Gu Erzhu saw that Zhou Banxia was still hiding in the aisle leading to the backyard and tinkering with the waste oil at the bottom of the pancreas.

The so-called waste oil at the bottom of the pot is that after the pancreas is made, there are still some turbid soaps and alkaline waste liquid left in the pot.

It was freezing before, and Zhou Banxia was too lazy to move.

Now, the weather is warm, and when the workshop over there is completed, it will naturally have to be moved to the workshop, and the accumulated waste oil will have to be disposed of.

After "nearly two months of careful consideration" and "experiments in recent days", Zhou Banxia also "finally" poured the mixed brine into the iron pot with waste oil at the bottom of the pot tonight.

Stir and heat vigorously, and "successfully" make oil wax, but also get a little stinky water - glycerin.

Although it can't be compared with the well-equipped things of modern handmade workshops, she still makes it after 20 years.

Chemistry was not returned to the teacher, lard was reacted with caustic alkali to get soap, and after the reaction with hydrochloric acid, in addition to the particularly precious glycerin, there was also wax.

Wax is the candle used for lighting in the home.

In this way, after the reaction of lard and caustic alkali to obtain soap, some fats that are not fully reacted can be acidic to obtain a little glycerol, and wax can also be made, effectively avoiding waste.

At this time, the mother-in-law and daughter-in-law squatted in front of a pottery plate filled with oil wax, used the bowl as a mold, pressed a small section of cotton thread, and asked for a "candle lighting" on the spot.

The torch at the height, under the light of the lantern nearby, the light was still okay, and without going closer, Gu Erzhu saw that Liu had lit the cotton thread in the bowl.

It's done?

If you want him to say that the pancreas has made a lot of money, don't use these waste oil at the bottom of the pot.

But the three girls of his family were unwilling, saying that since people can use butter to make butter wax, let her think about it again, maybe she will come up with it.

It's really done!

Looking at the flames that were obviously much brighter than the oil lamp, Gu Erzhu walked forward quickly, and Li Suo grabbed the work of lighting the cotton thread in the next few bowls.

Liu Shi was amused when he saw this, and he didn't rob him, and looked at it for a while, "Daddy, not only is it brighter, but it doesn't seem to be a big smoke." ”

Zhou Banxia was happy, of course it was not big, after several processes, the impurities of the remaining oil and wax were much less, so the smoke was less than the ordinary wax.

"No, this wax is bright and smoky, it is a first-class wax, if you take it out and sell it, it should be able to sell it for a good price."

"I mean the price?"

Liu said with a smile, "Why don't you praise the child's brain." You kid, you say you have a long head. ”

Gu Erzhu laughed and immediately shut up, "Don't praise children, our children are a little smarter than ordinary children, remember." ”

When these words stopped, even Zhou Banxia was happy.

"You stupid boy." After Gu Erzhu finished speaking, he saw that their mother-in-law and daughter-in-law were still happy, and he couldn't help laughing.

After observing for a while, he found that the quality of the wax made was actually better than that of paraffin wax and insect wax on the market, second only to the best butter wax.

Another good thing.

Don't look at this time, just put a broken bowl in it, soft and lying on your stomach, put a thick cotton thread and forget it, and when it is made into a candle, it will not make money again.

Ordinary people use oil lamps in their homes, and candles are things that only rich and noble families can afford.

Among all kinds of candles, paraffin wax is the second, the smoke is small, and it is slightly brighter than the oil lamp, and the most expensive is the butter wax made of butter and mutton fat.

The butter wax is also the most popular among large families because of the small smoke and bright fire, and the price is naturally the highest, and the best butter wax costs at least 30 yuan.

But the lard wax in front of me is not to say that it is waste oil at the bottom of the pot, but it is made of lard, and the cost is not much lower than butter and mutton fat, and the key lard is easy to buy.

This kid has found another way to make money, thinking of this, Gu Erzhu had to remind, "This recipe must also be guarded." ”