Ding Qi asked him to fetch some hydrated lime and hemp rope that had been exchanged from the Ma tribe. Then a multi-purpose Swiss Army knife scrapes a pile of hemp wool from the hemp rope, and then the cooked tung oil, hydrated lime and hemp velvet are stirred together.

Tung oil and lime at this time is very viscous, and then add hemp wool is to increase this viscosity to the strongest, and at the same time use the waterproof property of tung oil not to soak the lime water, hemp velvet plays a connecting role, so that the whole mixture can be kept one, and can fill the gap on the hull without leaving a gap.

The plugging agent produced in this way is also a kind of oil sludge, which is stuffed into the seam or wormhole of the ship, and will be very strong and reliable after drying, preventing leakage and lasting for a long time. In addition, the outside of the seam of the ship should be brushed with at least five layers of tung oil, so there is no need to worry about the leakage of the ship if it is properly maintained.

These are the conclusions reached by ordinary laborers after thousands of years of exploration and experimentation.

Soon, the plugging agent was stirred and handed over to Jing to take care of the cracks and loopholes in the boat. The boat had been rowing outside the headland of South Lake for a while, and the effect was okay, but it couldn't stay in the water for a long time.

Since then, Jing has put this boat in his carpenter's yard, studied and polished, and after such a long time, the hull is very smooth inside and out, and there is not even a single burr.

Jing took out a handful of bamboo daggers, a thin slice, like a piece of bamboo used to wrap wontons, and carefully filled the holes in the boat, leaving not a single hole.

Soon, the raccoon dog will also boil the cooked tung oil with rosin and let it cool. Ding Qi knew that when boiling tung oil, it should be cooled down quickly, but now he is using a clay pot, and he doesn't dare to use cold water, so the whole clay pot will be fried.

Ding Qi watched Jing clean up the wooden boat there, which was the preparation for the tung oil.

It is not only necessary to clean the surface of the wood, but also to keep the surface of the wood flat, and after filling the potholes, the plugging agent should be polished smooth and flat, so that the tung oil can slide smoothly without wrinkles, and promote the waterproof and anti-corrosion of the hull.

Cooked tung oil with rosin is a fast-drying cooked tung oil, and the drying time will be faster, about 2-5 hours can be completely dry, and the extremely cold weather will not exceed 8 hours

When brushing tung oil for the first time, be sure to brush it carefully and evenly, so that the tung oil will cover all the surface of the wood, but do not brush too thick, and then let it dry.

After brushing the tung oil once, place it to dry naturally, and then polish it to polish the surface of the tung oil, and then apply tung oil, and then air dry, repeat several times. This is the correct way to brush tung oil, but there are no good grinding tools now, and it is best to brush tung oil with cotton cloth. Ding Qi really didn't want to take out his cotton underwear for Jing to use, even if the underwear was rotten.

Seeing that there was nothing to do here, Ding Qi handed over the work to Jing and the raccoon, turned around and went to the cafeteria, took a few processed crucian carp and grass carp, and returned to his residence. Then he and the deer who stayed in the yard and waited for him went to the Ben and Cang families to see the two children, and gave each family two large crucian carp, which was the best for milk.

Then the two of them went to the courtyard of the Great Elder of the Stag, where the old man was holding a baby and smirking silly. It's just that the little guy doesn't appreciate it, and he is crying, obviously not adapting to this old father, or maybe he is hungry.

Last night, May gave birth to a boy to the Great Elder of the Bucks, and the old man was so happy that he didn't close his eyes all night, and he didn't see that he was tired until now. The birth of this boy declares that he is already the younger brother of the deer and the future brother-in-law of Ding Qi. The leader's brother-in-law, whose identity is naturally unusual, can be said to have been born with a golden key.

By the stove, there was a slave girl who was burning a fire, and white things were boiling in a clay pot, and the mellow smell of milk filled the air, mixed with the smell of mutton. It was noon today, and the deer ran over to find him, saying that Aunt Mei had not been milking, and the little guy was screaming with hunger, so he asked Ding Qi to think of a way.

What can Tinch do? Not to mention, he really knows, but this method can only treat the symptoms but not the root cause, and the key is to see whether Mei can produce milk herself. For a woman who has already given birth, as long as the first child has milk to eat, most of the time there will be milk when the second child or even the third child is born.

Originally, Ding Qi was still a little evasive, after all, what he said to the deer, he was still a big yellow girl. If you tell the bucks, you are an old man, and you are a little embarrassed, not to mention the person concerned, Aunt Mei.

But then I thought about it, primitive people didn't care so much at all, what did they have to worry about? It is to tell the deer the method, one is to go to the sheepfold to milk the goat, boil it and let it warm it to the child first, so as to solve his stomach problem first. The second is that the deer helped to massage, and as for the massage technique, Ding Qi took the deer to a small room and secretly told her.

Just coming out of the hut, the deer looked at Ding Qi with a look that made Ding Qi regret telling her a little. The look in his eyes clearly said: You pervert!

But Ding Qi was wronged! Can I be like that? Fortunately, Ding Qi is thick-skinned enough, and he directly pushed this to the doctor witch of his original tribe, as for which doctor witch, huh? Does he have a tribe?

"What, you haven't tucked yet?"

Ding Qi came to the buck who was holding his brother-in-law and asked in a low voice.

"Hehe, you're here, it's okay, it's going to come down slowly. There are also tribal women who do not give milk, and they do not die of hunger. If it doesn't work, just use the rhizomes of those plants, chew them into minced pieces and feed them with some water. ”

The bucks are big-hearted and not worried at all.

"Besides, aren't you still here? Haha, I can actually think of feeding this fat boy with goat's milk, this is a good way for Aragami to think of! If we had known that this method existed, the tribal population would have increased a lot, and those children would not have returned to the bosom of the wilderness. ”

The buck, who was still big-hearted just now, said in a low tone at this moment, looking at the fat baby in front of him with a little worry in his eyes. Apparently he knew that many newborn babies were dying mercilessly because of lack of food, or could not stand the cold of winter.

"Don't worry, I'm here. This is my brother-in-law, so I have to keep him fed. ”

Ding Qi patted the buck on the shoulder, signaling that he was there and would not let the child have problems. Besides, now that a solution has been found, it doesn't matter if Aunt Mei has milk or not.

"Deer, you go inside, I'll see how the goat's milk cooks."

When Lu heard Ding Qi ask her to go inside, his face turned red suddenly, and he understood that he was letting him continue to massage Aunt Mei's breasts. The kind of method he said, so that he can't see people, how can he let himself press it? But if you don't let her press it, can you find a more suitable person? But that method is too awkward, say that you should soak the deerskin towel in warm water, cover it while it is hot, and then start kneading, patting, and then rotating and massaging, tossing back and forth and then continuing to do it twice.

I'm a little ashamed, and I don't know where this tribal leader, who is not much older than himself, learned this nonsense. He wouldn't have really pressed it on other women! Hmph, see how I clean him up when I go back!

Ding Qi, who didn't know that the vinegar jar had been turned over, was standing by the stove at this time and watching the slave girl cook goat's milk. As long as it is boiled for a period of time, it can kill the germs in it, and when the temperature is right, the baby can drink it. There are small wooden spoons that can be fed little by little.

At this time, the goat's milk was just steaming out, and the slave girl, who didn't know which tribe she came from, was carefully stirring the goat's milk with a clay spoon in her hand, and at the same time controlling the temperature of the fire below, so as not to heat the goat's milk too quickly and cause the goat's milk to overflow. At noon today, because it was the first time to cook goat's milk, I let the pot of goat's milk overflow and almost get beaten. Fortunately, the deer and the stag elders were kind, but they just asked each other to be careful and continue to cook milk.

Ding Qi saw that as the temperature increased, the goat's milk began to bubble, and the bubbles gathered together, and some impurities constantly appeared on it. It appears to be a milking slave who has not been cleaned up, resulting in impurities in the goat's milk.

Even, I saw that there were some yellow things on it, like grease, but also some impurities like wool.

"Is this mutton fat?"

Ding Qi was a little curious, it was the first time he had seen someone else cook goat's milk. In the past, when I boiled milk for breakfast, it was all processed milk, and there were no impurities in it. Looking at this scene, Ding Qi seemed to have forgotten something, and he couldn't think of anything.

Just as Ding Qi was frowning and trying to figure out what he had just thought, suddenly a deer screamed from the back room.

"Ahh It's out! Milk! ”

This shout, but it was amazing, it directly woke Ding Qi up, and the stag rushed into it with the child in his arms, and soon the stag elder laughed, but the baby who was sucking was scared to cry!

Ding Qi shook his head and couldn't help but laugh. I wanted to go in and have a look, but when I thought about it, the mother-in-law must be breastfeeding, which would be inconvenient to go in, so forget it. And the slave girl in front of him secretly glanced at Ding Qi at this time, covered her mouth and laughed, which aroused his interest.

"Hey, what are you laughing at? Aren't you afraid that the Elder Stag will come and quarrel with you? ”

Seeing her like that, Ding Qi couldn't help but want to tease this slave girl, who was about twenty years old. Unexpectedly, as soon as Ding Qi said this, the other party's face turned pale and extremely pale, as if something frightened her was about to happen.

"Ahh Sorry, it looks like it scared you. I'm just kidding you, don't be afraid! Tell me, what's your name and what tribe do you belong to? ”

The pale-faced slave girl had obviously not recovered from Ding Qi's words just now, but she still hastened to answer. Because she knew that her identity was a slave, and according to the past practice, if she did not answer immediately, then there was a high risk that she would be severely beaten.

"Back to ...... If you go back to the master, the slave's name is Bai Mao, and I was exchanged from the Bai Ze tribe, but I am not from the Bai Ze tribe. I... I don't remember which tribe I used to be, because I was taken away when I was very young, and I was exchanged many times in between. ”

The two began to chat, completely forgetting the goat's milk that was boiling in front of them. Maybe they both knew that goat's milk was not important now, so they didn't pay attention to goat's milk anymore, and they were chatting happily. If the deer sees it, I guess I have to think about how to clean him up again.

Suddenly, a mushy smell rushed into Ding Qi's nose, waking Ding Qi, who was immersed in chatting. And Bai Mao, who was chatting happily, turned pale again, obviously feeling that this was an unforgivable felony.

Ding Qiding looked at it, and saw that there was a layer of black things on the goat's milk, which was the burnt goat's milk and the previous impurities. In addition to these black things, there are white honeycomb-like things, like ice cream made from cheese, and also like ghee.

"Huh? Butter? Is this goat's milk ghee? ”

Ding Qi, who had been on a mission in Tibet and trained there, tasted ghee and butter tea made from yak milk, and the smell is still in his mind and he will never forget it. Of course, there are also those devout believers who measure their pilgrimage with their own bodies.

Thinking of ghee, Ding Qi finally knew what he had forgotten just now.

It is ghee, which is extracted from goat's milk or cow's milk. In addition to being edible and providing rich nutrients to the human body, ghee can also be lit and can solve the current lighting problem of the tribe at night.

At present, the tribe has more than 300 sheep, half of which are ewes, and there is already a lot of goat milk produced every day, which is currently provided to the old and weak in addition to pregnant women and mothers, to supplement their nutritional needs.

And now Ding Qi can completely move some of it and refine ghee from goat's milk to make ghee lamps, which can at least solve the problem of lighting some of the main people of the tribe at night.