In the cold in front of them, there is a white sand beach that cannot be seen at a glance, and the clear sea water washes the white sand beach, which reminds Xu Jie of the past when he ran with his girlfriend on the white sand beach in the North Sea in Guangxi, and his mood is also quiet.

Looking at the topography of this coastline, there is no other choice, all of them are smooth sandy beaches.

If you don't have the Sea Clan and the Sea Demon Beast, it's easy to do. But now that they exist, there are not many conditions to choose from, nothing more than to get the sea water ashore from the sea, and then filter it and extract salt. The difficulty is that the difficulty lies in taking the seawater, and when the materials are ready, you can try it by using the siphon principle.

They didn't know that in fact, in the middle of the sea, there was a creature that had been watching their every move, as if curious about them.

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The next day the materials arrived. The workers were called in and a shovel was used to dig a square reservoir about three meters deep and ten meters wide. The ruler left a ladder on the side. The perimeter of the pool, including the bottom, is tamped with a hammer. Also dig a ten-meter-wide evaporation pool five meters deep and ten meters wide on the edge of this pool. The two pools are connected by ten bamboo pipes with a thickness of 20 cm.

The bamboo nozzle of the cistern is one meter up from the bottom, and the bamboo nozzle of the evaporation pond is two meters up from the bottom, so that there is a one-meter drop.

When the workers were digging the pool according to Xu Jie's request, Xu Jie had already asked the soldiers to connect the long bamboo pipes they had brought, section by section, and extend them into the sea. The main pipe is bonded with iron sheet pipe, and the middle is bonded with heated softened fish skin glue, which only needs to be cooled, which is the best natural glue and waterproof.

When the supervisor in front of him had gone deep into the sea, and when there were two or three meters, Xu Jie would not let them push the pipe in again, because it was enough to get water, and he was afraid of attracting the attention of the sea tribe.

Then the pipe at this end is connected to a position that can penetrate half the depth of the reservoir, with the mouth facing downward.

At this time, Xu Jie took out the filter bag that had been prepared (the front was two layers of gauze, followed by three layers of tight fine linen, each layer of linen was in the middle of the west linen, there was three centimeters thick of clean fine sand, and finally 15 centimeters thick fine charcoal powder, these charcoal powders had already been tightly packed with linen), and put the filter bag into the ten 20-centimeter bamboo pipes in the middle of the two pools, compacted, leaving no gaps.

When reconstructing the pipe connecting the seawater and the reservoir, pig urine bubbles were tied to the mouth of the pipe at the mouth of the sea, and a slipknot was tied and the slipknot was left on the shore.

At this time, Xu Jie told the warrior to pour water into the big root, which led to the sea, and when the water came out of this end, he also sealed the opening at this end (a loyal warrior actually blocked this hole with his stomach).

Then he put the bamboo pipe mouth into the cistern half deep, and told another soldier to open the line at the mouth of the sea, and remove the pig urine bubble, and when the belly on the bamboo pipe mouth of the cistern was also released, I saw that the sea water was constantly gushing out of the mouth of the pipe.

This phenomenon stunned the people around who had never studied physics. Xu Chengfa was also surprised, he really didn't expect that going to the sea would be such a method.

After a while, the water in the reservoir was gone, and the filter nozzle, the outlet of the filter pipe, began to tick out.

"Take a basin and go and bring up the water that comes out of it. Xu Jie commanded.

One of the retainers took a wooden basin from the side, jumped into the evaporation pool, and after receiving a full basin, he came up from the stairs on the side.

"Throw half of this basin of water out, it's too much. "This full basin of water, evaporated by the sun, how long will it evaporate?

The retainer had no choice but to pour it into the evaporation and half of it, and then brought it to Xu Chengfa and Xu Jie!

"Grandpa, this water is already clear, there are no impurities in the salt water, we just need to wait for the water to evaporate, the rest is salt, this temperature does not have to wait for a long time." ”

Grandpa Xu Chengfa just watched quietly and didn't say anything.

After about two hours, the basin of water had been discharged, and the bottom of the basin was left with a layer of white crust. Xu Chengfa picked a small piece and put it in his mouth, he spit out the salty one, everyone could see the surprise on his face, and said incoherently: "Baby grandson, salt, just get it out like this? Just a few worthless bamboo pipes, dig a few pits, and such a good salt comes out? This is going to make a fortune, to make a fortune, hahahaha... ”

Looking at Xu Chengfa, who was a little crazy, Xu Jie was also very happy, because the things that immediately changed the world had been born from his hands, and the subsequent plans would also unfold with this salt and paper.

"Grandpa, on the edge of such a reservoir, you can also dig a few more evaporation ponds, so that you can fully utilize, and these pools are only the beginning, and they have not been reinforced and decontaminated at a deep level, it is best to wait for my cement to come out, and then use cement to make a new pool, which is better, and now I will use it like this." ”

"Okay, Wu Feng, you are the most calm among the retainers, the little young master here, you have also seen the method, you should have learned it, then I will hand over this self-research matter to you to be responsible, can you handle it?" Xu Chengfa said to a big man next to him.

Wu Feng looked excited: "The master gave me such an important task, this is a great trust in me, Feng will be loyal, and please allow me to take care of the salt factory nearby." ”

"Grandpa, it's too hot here, it's not good for Uncle Wu. Xu Jie thought that if he was allowed to live in such a barren place on such a hot day, he would definitely not be able to stand it, and said the above words in his heart.

"Please rest assured, young master, Wu Feng can endure any hardship. Master, the matter of salt production is very important, please send some more family soldiers to escort it. ”

Xu Chengfa looked embarrassed, there were only more than 100 retainers in the family, all of them were veterans of his subordinates when he fought the world in the past, and there were many disabled ones, and his loyalty was needless to say, but the number was too small, and the Huohong City still needed to be guarded, and the lord's mansion was guarded, so it was embarrassing!

Xu Jie saw Xu Chengfa looking at him, and he understood what he meant, but he didn't have any manpower!

At this time, a soldier ran and said, "The old man is not good, this pipe does not come out of water." ”