The so-called relying on the mountains to eat the mountains, relying on the sea to eat the sea, since Dengzhou is close to the mountains and the sea, this resource is actually quite rich.

However, Lin Sen's choice must not be to sell seafood, this thing should not be sold too much, but it is basically limited to the coastal and surrounding areas.

In these places, all kinds of fish are not rare, and the price naturally cannot go up.

This is not the extinct fishing tool that trawlers used in later generations, and the current fishing speed of people can be completely compensated by the ocean itself, and the overall impact on the marine ecology is still very limited, and it is unlikely to cause a local reduction in production.

Well, Hepu pearls are an exception.

However, with the existing transportation efficiency and preservation methods, the only products that can be guaranteed to be transported to distant places are all kinds of dried products, dried fish, or salted fish.

If you lose a fresh word, for mainlanders, the attraction of these seafood will definitely decline a lot.

There is no distant-water fishing, and there are no new species that can be caught in the coastal waters.

And then there is the freight in it, and the cost is much higher.

And do mainland people still have river fresh food to choose from, so in general, there are actually a lot of restrictions on seafood.

It is not the original Shi Thorn History, which contains political showmanship, pulling a whole boatload of dried fish to Chang'an to sell, then there is still a meaning of fundraising, and it is not very easy for other seafood to open the inland market.

It is probably abalone, sea cucumber or conpoy that is well-known that there are some markets in the mainland, and the price is not as exaggerated as in later generations.

The main thing is that most of these things are on the bottom of the sea, with most of the current technology is relying on artificial, diving to the bottom of the sea one by one, there is a great danger, the efficiency is much lower, and there is also a need for a fine processing process, which is completely understandable that the price is higher.

However, the quantity is not as scarce as in later generations, so the price does not go up much.

Of course, these things are also very good to put in the unique taste, and you don't have to worry about not selling at a good price.

But after all, the demand for such a thing is relatively small, and it is obviously not enough to subdue the hearts of these more than 1,000 subordinates and develop into a thriving business, which can make the merchants who come in and out here continuously.

Lin Sen's goal is to target some things that are very common in the sea.

First of all, in later generations, it has not exerted too much iodine supplementation ability, and it is more simply as an ingredient, relying on the taste to win the love of many people's kelp.

This thing is too common on the seaside, and it is a dish that can be seen everywhere on the fishermen's dinner table, but it can be put in Datang, which has no iodized salt, but in fact, its iodine supplement effect is more important, and it is not an exaggeration to say that it is a medicinal herb.

At this time, there is no shortage of patients with "big neck disease". So correspondingly, as long as the publicity work is done, whether it is as a food supplement with the same origin as medicine and food, or simple vegetables, they should be able to be quickly promoted.

As for the transportation problem, it is very simple, similar to handling marine fish, either it is made into dried kelp, or it is made into kelp pickles.

With today's scarce iodine supplementation, as well as the relatively common iodine deficiency population, the demand for this thing is certainly not much smaller.

It is still a persistent demand, which is completely in line with Lin Sen's vision, and there is no problem in making it a big industry.

In addition to the previous two methods, you can also make roasted seaweed with a concocted flavor according to the method of later generations, which is also very good as a relatively expensive snack.

Last but not least, salt!

Most of the salt in Datang is still well salt and so-called green salt, because of the relative concentration of salt wells and the inconvenience of transportation, eating salt is still a big problem in some places.

Even now, when grain is bumper year after year, vinegar cloth still has a large market.

If Lin Sen hadn't crossed over to the periphery of Chang'an City, eating salt would have been a big problem.

And the price of those delicate green salt is very expensive, and the luxury of brushing teeth with green salt can only be enjoyed by those big families.

Because Datang will mainly use the decoction salt method, relying on this soil method to purify some saline-alkali water, what is obtained is the so-called green salt, which I don't know how many more processes to purify.

The ordinary one is just a simple coarse salt, the color is called a wonderful, and there will be a lot of impurities in it if you don't get it right, because of heavy metals that exceed the standard, and it is not for nothing to eat dead people.

The output is not guaranteed, the cost is still very high, coupled with the inconvenience of transportation, most of the salt wells are in some corners and corners, so the supply of the most important salt is not so timely. The border army is better, they all have their own salt wells, but except for places like Chang'an, the supply of salt in ordinary prefectures and counties is a bit stretched.

It is not difficult to imagine that if the idea of Linsen's sea salt drying technology is successful, there will be no need to worry about sales at all, basically how much will be pulled away, and the popularity of the scene is absolutely predictable. And this kind of industry is quite stable, as long as someone definitely needs to eat salt, then the cheap sea salt must have more advantages than those that seem to be shoddy well salt, plus the transportation network in Dengzhou extends in all directions, compared to those salt wells, it can naturally radiate to a larger range.

The system problem that needed to be worried the most, that is, the "salt and iron monopoly" that was usually thought to be, was not a big problem when it came to Lin Sen, at least in the early stage during his tenure, this was very guaranteed.

Lin Sen has Li Shimin's secret intention in his hands, and he already has the right to act cheaply, as long as he doesn't do it too outrageously, no one can use this to find fault with him.

Another one actually has a lot to do with the salt industry policy of Datang, which is not a one-size-fits-all franchise in people's impressions, but is divided into many different policies according to different situations in various places.

There are inheritances and innovations in the system of the former Sui.

Needless to say, the taxation system has more salt taxes paid in fixed amounts, and the government-run system has both civilian and military tuns, which are naturally based on local conditions.

The border states with a large number of troops naturally use the method of military cantonment official camps, and the salt fields of Mintun also belong to the official, but the people have a share.

Among them, there are also some local specialties that are more popular, and the government will directly use these specialties to replace the government's share.

Some salt wells with less production may even be tax-free.

These were all measures that had been in place before the Sui Dynasty and were inherited by the Tang Dynasty government.

The salt substitution system and the tenant system had never existed before in the Sui Dynasty, and it was a new system in the Tang Dynasty. It can be said that it is quite flexible and changeable.

Because Lin Sen is close to the sea, there are more than 1,000 big-headed soldiers under his hands, and then using the method of drying salt, this output will definitely be considerable, and it is absolutely impossible to do it without taxes.

In that case, Lin Sen didn't accept his subordinates, and he didn't run away when he buttoned up the hat of inviting people to buy people's hearts, which is a typical damage to the public and private interests.

Therefore, the official camp is still certain, but it is just a military-style official camp similar to Mintun.

In other words, his soldiers have a share, which is enough to keep them motivated.