After the test, at room temperature, these glass cans can be stored for up to three months to five months if they do not run out of gas, so that the fruits in the bottle will not rot and deteriorate, so as to more or less solve the needs of some crew members to supplement vitamins, but for vitamin C, the vitamin C in canned food is basically destroyed, for this, Yu Xiaotian has no better way.

As a sailing enthusiast, at least a pseudo-sailing enthusiast, he knows more about this matter, and vitamin C is the most abundant among citrus fruits, so he often purchases citrus fruits or green vegetables in large quantities from the land and replenishes them to the ship, so that the crew must eat a little bit every day, and as long as there is an opportunity along the way, he will purchase as many of these citrus fruits and green vegetables as possible to supplement the ship for the crew to eat.

In addition, he had occasionally heard in the previous time and space that it was said that sour cabbage was also rich in vitamin C, so he ordered the pickle workshop to pickle more sour cabbage and distribute it to the ship to adjust the crew's diet, so that it was a so-so solution to the problem of scurvy caused by vitamin deficiency among the crew.

And the glass cans this kind of fresh things, has also aroused a lot of interest, canned fruit tastes sweet, the taste is quite good, go to sea to eat this thing, so that many people are very happy, for a time glass cans have become the great love of the crew, of course, glass is still a luxury, after the crew has eaten the cans, the glass bottle must be carefully and properly kept, can not be discarded at will, must be brought back to the council hall, refill the can, even if it is accidentally broken, It should also be brought back to the glass yard to be remelted and reproduced.

Later, a businessman had the opportunity to taste this kind of glass canned food with the ship, and he was also very cold, and felt that it tasted good, so he went to Nanri Island to ask for a high price to buy some back, as a gift to some dignitaries and nobles to try it, which actually attracted the attention of more people, and began to buy this kind of fresh gadget everywhere, so he simply let Xiaotian build a canning factory on the side of Tamsui, specializing in the production of canned food, in addition to meeting their own needs, but also began to transport it to the land for sale.

The value of the glass bottle itself far exceeds the fruit inside, and after it is sold on land, after the rich people buy it and eat the canned food, the glass bottle is also used by them as a vase or something, anyway, it will never be thrown away as garbage like in later generations.

These trivial matters made the Sea Wolf's subordinates feel that their big boss valued them, and they naturally felt more at ease to work here.

In fact, people are like this, once they have not experienced such a good life, it doesn't matter, but once they experience such a high-quality life, they want to return to their original state of life, most people can't accept it.

The quality of life provided by the Seawolf Group to these subordinates is far more than their previous quality of life, although the rules here are strict, and some of the rules can even be said to be a bit nitpicking, which makes the lazy people a little unbearable at first, but once a long time, habits can be changed, and the vast majority of people begin to adapt to this kind of life, especially the quality of life provided to them here, so that they are not willing to give up this life at all.

In this way, if someone wants to destroy the sea wolf now, it is equivalent to smashing their jobs, and most of these people will not agree! Therefore, giving his subordinates enough good treatment is also a very good way to improve the loyalty and cohesion of his subordinates, at this point, Yu Xiaotian's current colleagues in China's coastal areas, there is really no peer who can do this, which is why he believes that his subordinates will consciously safeguard the interests of the sea wolf.

Of course, these things are just peripheral things for the sea wolf to deal with the opponent next, and fundamentally if Yu Xiaotian wants to keep his territory and his current position at sea, he still has to rely on force to speak.

After a year, Yu Xiaotian went to Tamsui City again to inspect the workshops under the jurisdiction of the newly put into production ordnance, at this time the entire Tamsui City has formed a new workshop area of considerable scale, after entering the Tamsui estuary, you can see the chimneys erected in the workshop area from afar, spitting billowing black smoke into the sky.

This is a picture of the development of a standard industrial industry, but it is a pity that most of these industries are still in the manual stage, with only a small amount of machinery in use, and they still rely on human and animal power.

As a ship operating at sea, the ships of this era are made of wood, and after long-term immersion in the seawater, there will be sea maggots gradually eroded into the ship's plank, which will gradually empty the ship's plank, reduce the service life of the ship, and even seriously cause the ship to have a major accident at sea.

But it is also very easy to deal with sea maggots, you only need to regularly sail into some rivers and anchor in fresh water for a few days, because the sea maggots can not survive in fresh water, they will die completely, which is very important for the wooden sea ships of this era.

In the past, before the sea wolf did not occupy the freshwater, the ships could only find a way to go to the estuary of several rivers along the coast of Fujian to anchor in the area to solve this trouble, but that was dangerous and would cause tension among the local officials and people, but now this problem has been solved very well after occupying the freshwater area, and the ships of the sea wolf do not need to venture to anchor in the land rivers in the future, and they are ordered to come to the Tamsui River in batches to dock.

In this way, in addition to allowing the ship to solve the problem of sea maggots, the personnel on board can also take a break here in Tamsui City and overhaul their ship, which is a pretty good rear base for the sea wolf.

Therefore, in the river here in Tamsui, a large number of sea wolf ships often come to stop for a few days, which makes this place very lively.

Yu Xiaotian saw these scenes when the boat slowly sailed into the mouth of the Tamsui River, and he could see that a city was being built step by step in his efforts, and it would not be long before it became more and more prosperous.

After entering the estuary, he can also see that several new forts have been built on both banks, and on the bank outside the estuary, a new lighthouse has been built, which is an important facility for the ships that come to freshwater at night to provide course instructions, with its existence, the ships that come here in the future, even at night, can easily find the freshwater estuary, and safely sail into the estuary under the guidance of the pilot boat, and moor in the anchorage of the river.

And the construction of this lighthouse, Yu Xiaotian also contributed a lot, he helped design the lighthouse, especially the lighting part above, he personally participated in the design.

In order to increase the effective range of the lighthouse, so that the ship can see the lights emitted from the lighthouse from a farther distance, the lighthouse uses whale oil as fuel, and more importantly, Yu Xiaotian designed a light-gathering device for the lighthouse.

That is, a fairly large concave body is made behind the lamp, and the light reflection of the lamp is concentrated in one direction, more like a spotlight, which can be illuminated farther.

Although the sea wolf now has a glass industry, it is still difficult to make such a large condenser, so Yu Xiaotian finally used copper as the material of the condenser, and cast a rather large semi-arc concave mirror with copper, after careful polishing, it can also play the role of concentrating, projecting the light in the lighthouse to a long distance, and can even be used as a searchlight at night, projecting a pillar of light onto the sea, so that the personnel on duty in the lighthouse can see the ships outside the estuary at night from a distance.

In order to make the light can move, Yu Xiaotian also designed a semi-circular slideway around the brazier, the concave mirror can be rotated about 180 degrees around the light on the slide, and the light is projected on the semi-circular sea surface, which can be regarded as a very advanced design, the personnel stationed at the lighthouse push the copper concave mirror at night, and constantly sweep the estuary area, you can observe in advance the ships that are not lit at night on the sea surface, effectively preventing enemy ships from diving into the estuary at night and sneaking into Tamsui City.

In addition, there are more wind and rain at sea, the lighthouse will be affected by wind and rain many times, the lights may be blown out, even if it is not blown out, it will be greatly affected, the people on duty stationed on the lighthouse will also be affected by the wind and rain, and the pain is unspeakable, so Yu Xiaotian also installed a large arc-shaped window with glass for the lighthouse, and closed the lighthouse, so that the lights of the lighthouse are no longer affected by the wind and rain, and also provides a better working environment for the staff on duty. The windows were closed, and the lighthouse continued to work.

Although at this time, he was not able to produce large pieces of flat glass, and could only use the molding method to produce a smaller area of glass panels, but it was just enough to install more panes to install the glass, which would affect some lights, but the overall impact was not too big, and it was basically acceptable.

However, if outsiders see it, they will definitely shout that their sea wolves are too luxurious, glass is still a luxury, even if it is a wealthy family, they don't dare to use a large number of glass plates to install on their windows, and the sea wolf used dozens of such glass plates on the lighthouse at once, which is really too extravagant.

Moreover, as an important facility of the sea wolf, the lighthouse needs to be given adequate protection, so when the people here built the lighthouse, they built a gun barrier directly outside the lighthouse, and dug a trench outside the gun base, and two squads of soldiers were stationed in the lighthouse at any time.

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