It was a bit difficult for two people to hunt whales, and it was much easier for four people to take turns to fight, and soon the big guy more than ten meters long lost his resistance, and surfaced out of the sea with a harpoon on his back, lying on his side on the surface of the water motionless.

"Jiao, go back to the boat and draw it, this is called a right whale, you see it has a hard board on its head, no dorsal fin." Huang Tao and Carl jumped into the water with a cable and tied the whale's tail so that they could use the boat to pull it to the nearest island. Hong Tao continued to patrol around the whales with a harpoon, although it is said that there are usually no sharks and sea wolves in the sea where whales are infested, but it is better to be careful.

The Explorer's hull was too small to fit the ten-meter-long whale with the boat towed at the tail, so it had to be towed to the beach first, then the skin was peeled off, and then the fat layer was cut into pieces, except for the skin, baleen, fat layer and part of the fish, the skeleton, internal organs and most of the fish meat had to be discarded. This kind of right whale will always float on the surface of the water after death, but Hong Tao can't drag it with a boat, one is that it can't be dragged away, and the other is that it can't be dragged for a while, there will be sharks and sea wolves rushing up to bite it, just like the old man and the sea described, it is estimated that there is only one skeleton that can be dragged back, and there is nothing left.

"Let's get on the boat, if we pretend again, we will sink ......" It is false to say that you are not greedy, looking at the fish and meat on a beach, the explorer is about to be sunk, Bojiao and the Yellow Sea are still moving up, Hong Tao also gritted his teeth several times before giving the order to give up.

From the Paracel Islands to Ximaozhou, less than 400 kilometers of sailing, when the ship is empty, the wind direction is suitable, the explorer can run in one day, but when it is fully loaded, no matter how strong the wind direction is, the boat is the same as fixed on the sea, and it takes more than two days to see the island. This is also the sea conditions are more face-saving, and if the wind blows a little, Hong Tao will have to throw these stinky pieces of meat on the ship into the sea.

"Unload the ship! It's been a long time, it's all stinky, hurry up and start work! Hong Tao hated these fish oils, but they regarded them as treasures, and they didn't even look at their own daughters, but counted the five people who came down from the boat, all of them were missing arms and legs, and then began to command the families on the island to start unloading the boat, and quickly put these pink stinky meat into the pottery urn to heat, this is not stinky meat, this is all copper coins!

"Wen Bo, don't join in the fun, take the children to build a ship first, this time I only pulled back less than half of the whales, and the rest were all thrown on Ganquan Island, the boat is too small to move!" Seeing that Wen Lao Er and Wen Lao Eldest also came with their children to help unload the boat, Hong Tao immediately stopped going home and blocked them all in front of the dock.

"Yes, yes, yes! Shipbuilding is important, shipbuilding is important, go back quickly! When Huang Hai heard that the whale had only been half brought back, his heart ached, and if he didn't know how to work as a carpenter, he would have gone to help the Wen family.

With the arrival of the whaling ship, wisps of green smoke rose from the island, and the smell of fishy smell once again filled the beach. Eight large pottery urns were lined up, and the firewood below was non-stop day and night, not only the women of each family were engaged in the work of boiling whale oil, except for the Wen family's Qingzhuang and Hong Tao, almost everyone was busy with it, and a jar of whale oil was placed on the edge of the dock, just waiting for Luo Youde's big ship to pull it. The taste has no effect on them at all, compared to going out to sea to fish, what is the smell of a little smell, how comfortable it is to boil fish oil here, and you can eat three meals of white rice a day, whoever says that fishing in the sea is good, will immediately be despised by everyone. What is it called? This is called the easy to move from thrift to luxury, and from luxury to thrift, and no matter how industrious a nation is, it will not be able to pass this hurdle.

"Today we will talk about division, and everyone will take out the homework I left yesterday!" The only quiet place on the island is the small courtyard at the foot of the mountain, where more than 20 children sit in a regular manner, divided into two piles, with Hong Tao teaching mathematics on one side and Chen Mingen teaching literacy on the other. Because there are not so many people in the house, they can only attend classes in the courtyard, and the children are not impatient at all, they are like a dry sponge, and when they encounter a little bit of water, they must also suck it into their own bodies, and never waste it.

Unfortunately, education is a long-term accumulation process, and even if they are all prodigies, Hong Tao will not be able to teach a group of junior high school level children in a month. That's right, as long as some courses are enough for junior high school level, Hong Tao's requirement is to know 500 daily words, and it is enough to simply describe a thing in a language that he can understand and understand. Mathematics only needs to partially reach the level of junior high school graduation, and physics and chemistry cannot be taught for the time being, in addition to the lack of laboratory equipment, there is no suitable environment. In the Great Song Dynasty, when children were told that the earth was round and Newton's laws were told, the children had to ask who Newton was, and what did they say? You can't all say it's Australian, children can deceive, but adults can't.

Hong Tao is only cultivating a group of future captains, and he can't take care of further talent reserves now. The new ship is being laid and will be almost completed in just over a month, and he has to not only teach the children, but also find time to train the new crew. It is also very difficult to get Bo Xiaoer and their group of adults to abide by the rules they have set, and whether Bo Jiao can command his uncles and uncles is the key to whether he can be the captain of the Explorer.

In his busy schedule, Hong Tao still has to go to the glass kiln from time to time to do a little bit of his own thing, burning glass is far away, Hong Tao can't bear to let Luo Youde's investment all go down the drain, although Luo Youde has not complained a word, but the cooperation between the two sides always has to go and go, and the loss of investment is not happy to put it on anyone. Not to mention that people are well-educated, pretending not to know is that their character is poor.

What to compensate Luo Youde, Hong Tao decided to start with the oil residue left over from boiling whales to see if he could make soap. How to make soap, I learned it in high school chemistry, and the raw materials are caustic soda, animal fat, salt and alcohol. At present, there are a lot of animal fats and salts, as much as you want; There was no alcohol, and there was nowhere to get it, and it was too troublesome to distill the rice wine of the Song Dynasty, and the cost was too high to be cost-effective. In fact, alcohol is not necessary to make soap, it is only to make the oil more soluble in alkaline solution, without it just need to stir more.

Caustic soda, sodium hydroxide, commonly known as caustic soda, this thing is the key, without it everything is in vain. Was there a condition to make caustic soda in the Song Dynasty? The answer given by Hong Tao is not sure. In the Song Dynasty, there was natural miscanthus nitrate, which was generally only used as a medicinal material, and the sales volume was very small, but it was okay to buy it in large quantities, but it had to be purchased through other maritime merchants. Because the production area of natural miscanthus is mostly in the north, and now the north has been occupied by the Jin State, it is necessary to find those maritime merchants who trade with the Jin State.

Does Luo Youde have this way? Definitely, because the first batch of miscanthus has arrived. Merchant, as long as you offer the right price, they can buy you everything on earth.

With miscanthus nitrate and some quicklime, Hong Tao became a chemist, and he wanted to make caustic soda by local method. The method is very simple, first add water to quicklime to make lime emulsion, and then crush and dissolve the miscanthus in water, after the two solutions are fully fused and reacted, according to the principle, it is sodium hydroxide solution and calcium sulfate precipitate. The sodium hydroxide solution is filtered and evaporated to obtain industrial sodium hydroxide.

This Nima is easy to say, but it is not like that. The concentration, proportion, and reaction time of the two solutions are all unknowns, and the three unknowns are put together, and each parameter is changed, there are several changes, and each one must be tried to find the most suitable ratio. This work is very boring, and it has to be very detailed, Hong Tao really can't do it himself, and he doesn't want to do anything more than he is interested in.

But in order to survive better, this thing still has to be done, what should I do? It's easy to do, bring apprentices! Where are the apprentices? Just find two women from the Tan family to be apprentices. The apprentices were asked to do the tiring and annoying work, but they didn't tell the apprentices what they were going to do, but just asked them to keep adding water to the two powders and adjusting them, and then mixing them together. Hong Tao only needs to record the amount of water added, stirring time, and reaction results on the side. If it weren't for secrecy, he wouldn't even want to do the work of documenting.

After tossing for more than half a month, the two large tanks of miscanthus nitrate used up a little and a half, and finally found the most suitable ratio, and the caustic soda solution was made! Without reagents, how does Hong Tao know whether it is suitable or not? It is very easy to do, every time the caustic soda solution is poured into the residue left over from boiling oil and continues to heat, to see if the saponification reaction is sufficient or not. Which time is the most sufficient means which caustic soda is the best, and it will be blended according to this ratio in the future. As for whether it is really the most suitable, no matter what, caustic soda is not made to make soap, and soap is a victory.

PS: Clicks, Collections, Recommended Tickets! Sanjiang ticket threw it to Hong Papi hard......

The method is as follows: 1. The computer opens the starting point website, clicks on Sanjiang, and enters the Sanjiang homepage (mobile phone users please use the mobile phone Baidu search: starting point Sanjiang, pull to the bottom after entering, click on the computer version), after entering the lower right corner of the Sanjiang Dafeng push, you can see a Sanjiang ticket to receive a few words, click to receive, after receiving it, you can pull the web page to the bottom, and see that there is a voting label behind the "Southern Song Dynasty does not cough", click to vote. 2. The use time of the Sanjiang ticket is from 14:00 in the afternoon to 14:00 in the afternoon of the next day, and each account can only vote once in this 24 hours, which is invalid when it is outdated, so please vote directly for "Southern Song Dynasty No Cough" after receiving it, this ticket cannot be accumulated, one vote per account per day.