For Chen Xu, in fact, what he hopes most is to squeeze out the tea fruit oil first.

After all, no gunpowder and steel are not a problem that needs to be solved urgently, but rice must be eaten every day, and there are seven things to open the door: firewood, rice, oil, salt, sauce, vinegar and tea, now everything else is easy to say, he can bear it, but he can't hold on to this oil, if he eats fishy lard or mutton fat every day, he feels that he will not live to be thirty years old and will definitely die of blood lipid blockage.

The reason why the rich people in ancient times did not live long is estimated to be a very important one, and now Qin Shi Huang can only eat meat oil every day, but no matter what kind of fat is refined, eating for a long time will lead to high blood lipids, the better the life, the more serious, and the older the more harmful, so if Qin Shi Huang has tea tree oil to eat, it is estimated that he can live a few more years, change the dietary structure, and a healthy diet is also the key to longevity.

However, when Chen Xu looked at the sacks of tea tree fruits, he began to have a headache again, how to squeeze the oil out.

Later generations of oil presses are used to press oil, Chen Xu also saw the oil press in the town when he was a child, although it is not an oil press, but it is a hydraulic press, put the oil cake made with iron hoop and straw into the hydraulic press and pile it up, and then press it continuously like a jack, the hydraulic press will squeeze the oil cake tighter and tighter, and when the pressure is enough, the oil will be squeezed out, but now even the sealing of a bellows can not be done well, to make a completely sealed hydraulic press is completely the same as the Arabian Nights.

So after struggling for a long time, I had to go to the carpenter Liu Erwa again.

Because Liu Erwa has used tung oil, I think there is still a way to squeeze vegetable oil in this era.

"Lidian squeezes oil and does it, Tongyou County sells it, twenty dollars a catty, why bother!" Liu Erwa was designing bellows with a few apprentices, and she was very surprised when she heard Chen Xu ask how to squeeze tung oil.

"I'm not asking for tung oil, I'm going to squeeze tea tree oil!" Chen Xu explained.

"What do you do when you squeeze out tea tree oil?" Liu Erwa was even more puzzled.

"You've grown up lately, haven't you, why do you ask so much?" Chen Xu glared and wanted to kick this half-pulled old man out of the door.

"Li Dianmo is angry, the second baby is too talkative!" Seeing that Chen Xu seemed to be angry, Liu Erwa really became honest, "I have seen the method of oil extraction in the county oil mill, use a big wood, dig out a round groove with a diameter of two feet in the middle, crush the oil tung seeds with a stone mill and put them in the pottery jar to steam, and then use a round hoop woven with hemp grass and bamboo bark to make the steamed oil tung seeds into oil cakes of the same size, and then put them into the wood press, add wood blocks and wooden wedges, and use thick wooden poles to constantly hit the wooden wedges to squeeze the oil cakes, so that the tung oil can be squeezed out......"

Liu Erwa said this, Chen Xu also vaguely remembered that he seemed to have heard that wood pressing is an extremely ancient method of oil extraction, but it is not too old to be boundless, I remember that some ancient pressing mills in remote areas were still used on TV, but it was like hand-weaving as an intangible cultural heritage, and there was no use for eggs, and it was not hygienic. Even snot, sweat, and some things that cannot be traced, things mixed with it are even more inevitable.

But anyway, now that the tea tree fruit is available, and the method of extracting the oil is also available, Chen Xu decided to squeeze the oil out no matter what.

Big trees are not a problem, and production is not a problem, because he is a pawn in Qinghe Town, and more than 3,000 people in Qinghe Town are the objects that he can exploit and squeeze, as long as he is willing, under the mandatory order, the whole town must also help him squeeze out the oil with their hands, which is the reason why everyone wants to be the exploiting class, because it is so cool.

"Liu Po, arrange for someone to cut down the big tree on the hillside for me!" Chen Xu found Liu Po and pointed to the huge chestnut tree on the hill behind the pottery workshop.

Liu Po looked at the big chestnut tree with a diameter of six feet and a height of dozens of feet, and was stunned for a long time before he stammered and asked, "Lidian, is it ...... Did it you off? ”

"Well, I don't like it!" Chen Xu nodded.

"Yes...... Can you change it to a smaller one? Liu Po's face was twisted like a bitter melon.

"Can't!" Chen Xu said categorically.

Liu Po had no choice but to succumb to Chen Xu's obscenity and go to the tall and strong people in the town to cut down big trees.

It is estimated that it will take two or three days for such a big tree to be cut down, and it will have to be cut off and transported down the mountain, and it will also have to break the trench, and thinking of breaking the big tree with a diameter of more than one meter from the middle, the axe will definitely not work, and the hand saw will definitely not work, and it must be a double big saw that is at least two meters long, so Chen Xu turned around and went to find the hemp pole.

In order to eat vegetable oil, Chen Xu definitely gave up, even if all the work tasks in the town were stopped.

"One...... A one-zhang long copper saw? The hemp pole of the blacksmith shop was directing the two apprentices to pick the loess and prepare to make the steelmaking furnace abutment, and after hearing Chen Xu's words, his hind legs were weak and he almost fell to the ground.

"Yes, it must be at least nine feet long, otherwise the big wooden saw will not be able to open!" Chen Xu nodded.

"But even if I can cast such a long saw, how can I use it because it is too long?" Magen finally stabilized his emotions and asked.

"This is an improved two-man saw, it looks like this......" Chen Xu picked up a wooden stick and quickly drew the style of a common woodworking saw on the ground, "See, you only need to cast a saw blade that is nearly a foot long, make the handles at both ends stronger, and then fix the saw blade at both ends with a brace wood and a wooden bow, and then use hemp rope and a winch to tighten the saw blade behind the wooden bow......"

After Chen Xu's explanation, the hemp pole also roughly understood the principle of this big saw, so he nodded and said: "Lidian, I try my best to cast the saw blade, but I am not too sure whether it can be used!" ”

"Don't worry, it will definitely work, the saw blade can be widened to increase strength, but not too thick, otherwise I'm afraid it won't move!" Chen Xu advised.

"Don't worry, I'll try to make it thinner!" The hemp pole agreed, and then commanded the apprentice to start lighting a fire in the furnace, preparing to start casting this super big saw that was unprecedented in Great Qin.

Feeling that everything was finished, Chen Xu returned to the sugar and wine workshop again, asked Lu Gen to find all the helpers in the workshop, and began to clean up the tea tree fruits, picking out the moldy and shriveled ones and discarding them, and picking out the remaining good ones to the mill and crushing them all with stones, these dozens of sacks of tea tree fruits are more than 3,000 catties, and it is estimated that it will take several days to finish them all.

Therefore, Chen Xu went to the grain depot again to take a closer look at the remaining truckloads of groceries that had been unloaded, most of them were ores with crystal structures, and there were various colors, these were all metal compounds that Chen Xu felt could be studied well, and what made him the happiest was that this time Zhao Qing really lived up to expectations and brought him a large jar of sulfur, which was more than ten catties, which made Chen Xu excited.

In the end, Chen Xu opened a bag of Guanyin soil from the Shui family again, thought about it for a while, and then got some to go to the pottery workshop.

"Ridian, what else do you command?" Gao He, who was directing helpers and apprentices to make clay bricks, hurried up to meet him.

"Help me make a few bowls and cups out of this white clay and mud!" Chen Xu took more than ten catties of Guanyin soil off the horseback and took it to Gao He and said.

"Huh, such fine white clay?" Gao He was extremely surprised when he opened it.

"Hehe, this is not ordinary clay, this is called porcelain clay, and the utensils made are much more beautiful than ordinary pottery, but to really achieve the best effect, the fire temperature and heat in the kiln must be increased nearly twice!"

"How do you burn it out? It's useless to add firewood to this kiln temperature! Gao He said in surprise.

"Don't worry, this time I guarantee that you can make a very high fire temperature, but you can't use a large kiln, you can only use a small kiln, you use these soil to make some cups and bowls of different sizes first, try to make it thinner, not as thick as usual, almost half of it, build a small kiln next to the big kiln, you can put more than ten pieces into it......"

Chen Xu nodded when he said a word to Gao He, for Chen Xu, he admired the five-body throw, not to mention anything else, just the two things of the blank drawing machine and the fire kang completely solved his two most troublesome things from work to life.

At this point, and after most of the busy day, all the things that were transported back this time basically had a way to deal with them, and all that remained was to wait, wait for the wool to be spun into wool, wait for the steelmaking furnace to be repaired, wait for the oil press to be done, and wait for the small clay kiln for firing porcelain to be repaired, and the rest of the things can slowly start the next step of testing and research.

So early the next morning, after Chen Xu checked all the workshops again, he took Wang Wu and Wang Qi back to Xiaohe Village.