Yangyi's work was fruitful, and in two months, more than 5,000 displaced people were enrolled. The first batch of displaced people had already disembarked and settled on South Changshan Island. It should be noted that Yangyi has been appointed by Zhang Liao as the county governor of Donglai County. Responsible for civil affairs and criminal law for the entire county of Dongnae.

Originally, the county was supposed to be appointed by the imperial court, but now is an extraordinary period, and even Dong Zhuo can't get out of the tiger prison. The county guards and governors have become de facto local warlords.

The displaced people were put into the barracks, bathed, changed, examined, and quarantined for seven days. A complete set of programs. South Changshan Island has summed up the detailed rules for the resettlement of displaced people. When Gongsun Kang arrived at Changshan Island, the divine doctor An Daoquan was taking a medical team to check the health of the homeless.

Unified distribution of food every day, unified arrangement of work. Logging to build houses, leveling the land, and reclaiming wasteland have planted a wave of summer wheat.

Tai Shici followed him all the way and was responsible for introducing the resettlement of the displaced people. Some time ago, there was not enough food on the island, so Tai Shici organized soldiers and homeless people to fish near Changshan Island. The harvest is enough to provide for the inhabitants of the island.

"If you make a big net to fish. Hundreds of catties of fish can be obtained in each net, and 10,000 catties of fish can be obtained every day. Tai Shi Ci said.

Gongsun Kang believed this. In this era, the ocean has not yet been developed, and the fish in the sea grow freely, and no one catches them. Just like later generations, when the Great Northern Wilderness was just developed, there was a saying that "the rod beats the roe deer and scoops the fish".

If you think about it carefully, the propaganda of "beating roe deer and scooping fish" is also a method put forward by later generations of masters. Simple and simple, you can know how rich the Great Northern Wilderness is when you hear it, and you can absorb a large number of ignorant people to participate in the construction of the barren land on the border. Gongsun Kang felt that this method was good, and when he was ready to turn around, he wrote a letter to Yangyi and Zhang Liao, asking them to use this slogan to recruit the displaced people from Qingzhou to Liaodong.

"Fishing with large nets is a good way to solve the problem of food for displaced people, and it should be vigorously promoted in Liaodong." Gongsun Kang said: "The fish that can't be eaten can be salted and dried into dried fish, and I came to guide the establishment of the salt pan this time, and also asked Ziyi to organize people to dig out the salt pan by hand." ”

The method of drying salt was available in the Western Han Dynasty. At the end of the Eastern Han Dynasty, it was inexplicably lost.

The method of extracting salt from seawater is mainly the "salt pan method", which is an ancient method that is still widely used today. Use the method. It is necessary to select large areas of flat seaside tidal flats in areas with mild climate and abundant sunlight to build salt pans. It's just digging some deep pools.

Salt drying is the process of drying seawater into salt. The standard practice is to introduce seawater into the evaporation pond before drying salt. After the introduction of seawater, it is blocked, and when the seawater completely evaporates, only table salt and some liquid minerals that cannot be evaporated are left, that is, the mother liquor. The mother liquor contains a variety of chemical substances, from which multiple chemical raw materials can be extracted. But with the level of science and technology at the end of the Han Dynasty, it could only be poured down and could not play a role.

The mother liquor is also known as salt brine, bitter brine, and haloalkali, which is bitter and toxic. It is an industrial brine and is not edible. After evaporation and cooling, solute crystals are precipitated, called halide blocks. The brine block is actually a hard block formed by the evaporation and solidification of salt brine water. Lao Baixing collects the brine blocks in the salt pan and transports them to the whole country, and after adding water to dissolve, it is reduced to brine, that is, the brine of "brine point tofu".

If there are multiple pools, when the first pool evaporates water to a certain extent after sun exposure, it is poured into the crystallization pool and continues to be sun-dried, and the seawater will become a saturated solution of table salt, and the salt will gradually precipitate out after further drying. This is the crystal, which is what we commonly see as coarse salt.

This method is simple and easy, but the quality of the salt produced is poor, and it can only be regarded as coarse salt. Coarse salt is generally sold to the poor or to foreign people.

A standard salt pan is generally divided into two parts: an evaporation pond and a crystallization pond. By using the method of crystallization in multiple ponds, the efficiency of salt production can be improved.

Seawater → evaporation ponds → crystallization ponds → coarse salt and mother liquor, which is the whole process of drying salt.

The bottom of the brine pool is the ground, but the bottom of the crystal pool is covered with stones to prevent the brine from penetrating below the surface, and it would be a pity if that happened, because it would take more than half a year to get to this point.

A crystallization pond is about three or four meters deep, and when the time comes, it is full of salt, and when you dig it by hand, you can dig up a large handful of salt, like sand. These salts are bitter and coarse salts.

The coarse salt from the sea water is heated and boiled with water to filter out impurities and evaporate the water again; That is, purification through three steps: dissolution, filtration, and evaporation. The crystallized snow salt was available for the aristocratic and wealthy.