Yu Dayou and Qi Jiguang defeated the Japanese pirates and gave the coastal people a peace. They said that nothing was better than the officials of the aristocratic family who oppressed the people, so Su Ming should stand with them.

The gate of Erwei Castle was wide open, and men, women, young and old in the castle were busy. They were extremely happy to see so much food transported back. For ordinary people, nothing is more realistic than food.

It was not until early morning that all 640 stones of grain were transported back and placed in the fort like a small hill. Su Ming and his elder brother Su Ren came to the pile of grain and asked the small banners and banner owners to count. Today they would pay the grain they owe to everyone.

Since March last year, Jinshanwei has cut off military pay. Su Ren relied on private transactions with the Li family every month and received not enough food for the entire Weizhuang. Now the food owed in the institute is more than 1,000 stones, and there are countless silver. Su Ren plans to take out 500 stones of grain today and send it all.

500 stones of grain are enough for the entire Weizhuang Institute to use at least half a year. Five hundred stones of grain were distributed in one morning. A total of 96 households in one fort and six villages in Weizhuang Institute either used carriages and carts or directly used shoulder poles to send the divided grain home.

Su Ren put 10 stones of grain at home for the remaining 160 stones of grain. The grain cabinet at home was full, and the rest were all left in the granary in Houbao. There was no problem with the granary being very large and thousands of stones of grain was placed, but it was rarely used here.

After everything was done, everyone was already very tired. After not sleeping for a night, Su Ming went back to the house to sleep. He slept for 8 hours and waited until the next morning.

"Awaken? Come and have a meal! I've been busy these days. Don't go there if I'll do morning exercise later. I'll take a break at home for two days." Su Ren saw Su Ming coming out of the room and said.

Knowing that the three younger brothers were busy these days, Su Ren asked Cai to use the wheat he had just bought to grind flour and steamed white steamed buns, waiting for them to get up before eating.

After washing his face, Su Ming smelled a strong fragrance in the kitchen. His sister-in-law cooked so early this morning. When he approached, she saw that it was thick rice porridge, which contained a lot of shrimps.

Cai served Su Ming a bowl of rice porridge, put a few big white steamed buns in a basket, a plate of pickles and a dried fish soup, and Su Ming started drying it directly. He realized that the coast guard ships in the country could recover his physical strength and injuries, but the feeling of hunger could not be recovered, and he could not sleep.

After eating a bowl, Cai smiled and served the second bowl for Su Ming. At this time, Su Zhe also went into the kitchen and saw that the meal was so early today, he started to eat it.

"Brother, now we have food. I plan to increase the output of the salt yard as soon as possible. When there is more salt, we can only make more snowflake salt. With the money, we can continue to buy food. Then, we can also change the weapons and armor of our Erwei Castle. It is old and can't be used." Su Ming saw that his elder brother was sitting next to him with a big bowl, and he said.

"Just say whatever you want us to do, I can listen to your orders in the entire Weizhuang Institute." Su Ren said.

The eighth brother is capable of making snowflake salt. The entire Weizhuang needs to make a big change. Su Ren thinks that Su Ming has to rely on him. It’s only a few days after he came back that the food problem in the fort was solved. Moreover, although Su Ming is young, he does not have the impetuousness and impulse of young people. As long as the salt farm can produce snowflake salt stably every month, their future will be different.

"I can't say that the dispatch is, I plan to transform the salt fields in our salt farm. This transformation requires something special that we need to burn.

Today I went to the town to see if there were any larger crucibles. Do you know where to buy gypsum stone?" Su Ming asked.

Making ceramics will use a lot of gypsum, and buying gypsum stone should not be a question.

"I should have gone to the town to ask this. I'll ask you today. If I go to Jinshanwei Town to ask you, you can take your money by yourself. I'll buy the crucible you want in the afternoon." Su Ren said.

"Brother, you can go there yourself. Brother, please try to sell more limestone. The amount we need in our salt field will be very large. If my method can be achieved, it will not be a problem to increase the salt output of our salt field by ten times." Su Ming said.

"It's ten times more. As long as it can double it, I'm very satisfied. How much gypsum do you want?" Su Ren asked.

"It costs at least hundreds of stones! But brother, you can buy as much as you can. If this matter is successful, you can try to transform a piece of salt field at the beginning of next month." Su Ming thought for a while and said.

"So much? But if it's just gypsum stone, the town probably won't pay attention. I'll try to buy some today. If you have any needs at home, please ask your fifth brother and let your thirteenth brother follow you these days!" Su Ren said.

"Okay!" Su Ming replied. Su Zhe smiled when he heard that his elder brother wanted to follow his starling.

Su Ming still participated in the morning exercise. After the morning exercise, Su Ming came to a flat ground outside Erwei Castle. He wanted to increase the output of the salt field. The best way was of course to make cement.

As long as cement is made, new salt fields are not required to be built. Find a place with sufficient sunshine, less dust and less wind to build salt fields. Moreover, the bottom of the salt fields made of cement is not afraid of water seepage and there is not much mud and sand. It doesn’t matter even if you touch the bottom of the salt fields when taking salt water. The quality of this green salt will only improve.

When Su Ming was in high school in his previous life, he had a deep memory of a physics teacher. He always liked to analyze the principles of industrial chemical materials for students, and sometimes he also took everyone to operate together. Su Ming remembers the method of making cement in the civilized way.

There are only three materials for making cement: refractory materials, quicklime, and ripe gypsum.

Refractory materials such as furnace ash, charcoal slag, bricks and tiles are all fine. Quicklime is the simplest to make, but if you burn stones above 900c, just build a stove yourself, and the stove doesn't have to be very large.

The easiest way to cook gypsum is to heat and crush gypsum gravel. It is also possible to make cooked gypsum from flour, but for Erweiburg, this cost is a bit high.

"Brother, what are we doing here?" Su Zhe couldn't help asking curiously when he saw Su Ming bringing him and Tiezhu out of the Erwei Fort Gate.

"I need to use one thing to increase the output of our salt field. The place here is good. We will build two stoves here later, with a diameter of about one meter and a random height. We need a place to add firewood at the bottom, and reduce the mouth to the size of a bowl." Su Ming pointed to the two flat grounds he chose and said to Su Zhe.

"Cover it at will? Can it be used with adobe bricks?" Su Zhe asked.

"I use it to burn stones. You must keep the chimney. It is best to have a higher chimney so that the temperature of the stove can be burned up." Su Ming thought for a while and said.

"This is simple. I'll go to the fort and ask someone to go to the fort. I'll keep it for you tomorrow!" Su Zhe said as he was about to return to the fort.

Su Ming also wanted to work with Thirteenth brothers and Tiezhu, but he didn't want Thirteenth brother to let the people in the castle do it directly. The thinking of people in this era is somewhat different from those in later generations. Although Su Ming's family is poor, he is also a family of hundreds of households and is an official. It is natural to let his subordinates work. If they do it themselves, the people may feel uncomfortable.

"Brother Eighth Brother, what are you doing here?" At this time, Su Qingping also put on cloth armor and led a patrol on the fort wall with weapons. When he saw Su Ming asking.

"Fifth Brother, we are trying to find a way to increase the output of the salt field!" Su Zhe replied.

"It's not safe outside the fort now, don't be too far away from the fort... I'll come down later." Su Qingping said, and took six patrol soldiers down the fort wall.

During this period of each year, small groups of pirates have secretly landed along the eastern coast of the Ming Dynasty. They entered the village outside the fort and left after they were killed. The Jinshanwei's long coastline could block large groups of pirates, but they could not block small groups of pirates. Su Qingping was afraid that his younger brother would be in danger.

Su Ming was a little moved when he saw that his fifth brother still regarded himself as the weak scholar of the past. In the past, he took great care of Su Ming at home, including his father and all his uncles, because he was a scholar and the hope of the whole family.

The importance of cement to an era is beyond doubt. Su Ming is now firing cement to increase the salt production in the salt field. He can also renovate the broken Erwei Castle wall. If a large number of pirates and pirates come, the solidity of the city wall determines whether they can persist in the support of Jinshanwei Town.

"Fifth brother, I plan to burn something called [cement]. After the fire is finished, we can transform our salt fields and increase the output of the salt field.

I plan to build two stoves here, can you get some firewood back? In addition, I need some stones, preferably one with a higher hardness, just like this." Su Ming picked up a stone under his feet.

"There is a lot of firewood in our fort. I just need it for everyone to pick it up as much as you want. The newly cut firewood is too humid and not easy to use. I'll ask someone to collect firewood in the fort now... Wei Hong, take your little flag to pick up the stones first, and listen to Lao Ba's hardest stones." Su Qingping turned his head to the two small flags beside him and said.

Su Qingping easily handed over the task to his subordinates, and Su Ming also saved trouble. The problem of the earthen furnace and the raw materials was solved. Another thing was to grind the powder. Refractory materials needed to grind, and quicklime and gypsum were burned.

In order to keep it as confidential as possible, Su Ming planned to make all three materials, and then tell him the mixing ratio himself to only a few brothers. In this way, someone discovered their cement and knew the materials and methods of cement making, and it took some effort to successfully imitate it.

"Fifth brother, this refractory material needs to be ground into powder and used to pass it through with a sieve. Whether it is ash, bricks, or tiles, it requires a stone mill." Su Ming told Su Qingping the general way to make cement, and he handed over these labor tasks to the people in the castle to do.

"There is no problem. I will ask the people in the fort to collect together with the six villages outside the fort to find stone mills!" Su Qingping said relaxedly.

"The work has been divided, what are we doing?" Su Zhe saw the fifth brother, who was the banner owner, come over and easily assign the tasks, but found that he had nothing to do.

"Let's go to the salt field! Let's see how the salt field should be modified. We can start construction on both sides. When the cement is boiled, the salt field renovation will be completed quickly." Su Ming said.
Chapter completed!