Alien people''s positioning on the sea depends on the "celestial magic field".

The so-called "celestial magic field" is the sea of magic power that envelops a certain celestial body.

Due to the action of universal gravitation, magic energy is absorbed by celestial body gravitation, forming a "magic energy field" with uneven distribution of magic energy concentration around the planet, which is also the main basis for judging latitude when people of other worlds sail.

However, only the basis is not enough, and specific means are needed.

When measuring latitude, people of other worlds need to use something called "star magic stone".

The star magic stone is not a kind of magic stone condensed from the living body, but a kind of strange natural mineral. It has an extremely unique characteristic: to perceive the orientation of the magic field.

When the magic energy is input into the star magic stone, a large number of light spots will light up on its surface, and each light spot corresponds to a star in the sky. The larger the mass of the star, the closer the distance, the higher the brightness of the light spot.

The biggest three of them are the sun and the two moons, namely Yaan and EVA.

If we know the position of the celestial body, we can calculate the specific latitude.

But the alien people will not foolishly take a stone blind measurement, they invented a magical observation tool - astronomical instrument.

A large piece of star magic stone is carved into the shape of a sphere, and the latitude line, various star orbit parameters and the key geographical coordinates of the planet are engraved on the surface of the sphere.

The way to use the planetarium is very simple. After it is activated, according to the position of the sun and the moon, and compared with the orbit parameters, the angle data of the stars can be obtained. Finally, according to the different seasons, the latitude information can be easily obtained by consulting the star data manual.

Longitude information is not difficult to obtain. The local time can be obtained through the position of celestial bodies. Although alien clocks and watches are not accurate, they can also be used reluctantly. By comparing the clock time with the local time, longitude will come out.

To some extent, the principle of astrolabe is similar to that of sextant on earth, but it is more intuitive, more convenient and faster to use.

This method has a great advantage, that is, even if the sky is blocked by clouds, it doesn''t matter if the stars can''t be seen, and it doesn''t affect the use at all.

However, the planetarium has one drawback. In case of bad weather, such as storms and snowstorms, the magic field will fluctuate abnormally. The planetarium will lose its function directly, and the light spots on the surface will flicker like the wind.

In addition to bad weather, there are some strange anomalies in the celestial magic field occasionally, and the astrometer will have a great deviation.

For example, it is clear that the sun is high in the sky, but on the planetarium, the sun has already set.

This is the so-called "look at the face of magic.".

Since the advent of magic clock with higher accuracy, the accuracy of longitude measurement has been greatly improved, which is the real reason why Odin and Haichao dare to sail at night.

changed every two or three days, and the woodlouse''s navigation clock made mistakes. The longitude difference between 5 and 6 degrees was almost homely food. The navigators of different worlds did not dare to sail at night.

The first time Renault saw the object of the astrolabe was on the white tailed sparrow.

The astronomical instrument surface is engraved with dense lines and symbols. The astrological data manual matched with the astronomical instrument is more than 100 pages thick, and the astrological data recorded in it is even detailed every day.

Jean Reno was amazed by all this, and gave him the first insight into the wisdom of woodlouse.

Renault thought that the data in the manual were accumulated by generations of navigators, and the astrolabe had been updated thousands of times before it became what it is now.

But Elon told him that a long time ago, before human navigation technology was not developed, the astrolabe and astrology data manual were already like this.

In other words, it was astrolabe that led to ocean navigation.

This surprised Renault.

How is that possible?

After calming down, Renault thought of a very frightening possibility.

Is astrology a product of "prehistoric civilization"?

Very likely!

This is the most incredible but most reasonable conclusion.

Later, after digging out the "prehistoric relic" left by the suspected "devil" in Midway Island, Renault really realized that the history of the alien world was clearly shrouded in a thick fog.

In addition, the planetarium is also engraved with three extremely eye-catching double ring signs, and even Elon does not know what they represent.

Renault believes that if the planetarium is really a prehistoric creation, the double rings must have special significance, such as the artificial magic field!!

If the double magic field can be directly matched with the theodolite on the ground, it will be able to obtain the coordinates of the artificial magic field.

There is no need to observe the stars, and there is no need to look up the manual. This is the alien version of GPS navigation system!

Renault can think of this, of course, prehistoric civilization can also think of it, especially prehistoric civilization is likely to exist Magic in legend.The most powerful magic in the legend has boundless power to change the world. Is it difficult to create several artificial magic fields?

And the double ring logo is exactly three, isn''t that the so-called three-point positioning?

According to Elon, one of the double ring signs is located in the northern plateau of the black orcs, and the other two are located in the devil''s sea area on the other side of the planet. They almost divide the whole planet equally. Is there any other possibility besides the positioning sign?

The more Renault thought about it, the more he felt that this brain hole was most logical.

This conjecture made him daydream.

Prehistoric civilization must be a magic civilization with splendid culture. Those amazing magicians gathered the strength of the whole civilization and built three super landmarks on the planet, creating a star level navigation system.

So the question is, why is such a powerful prehistoric civilization completely annihilated in time, and not even a word can be left to future generations?

Because of the natural disaster?

There is indeed a saying about "the disaster of extermination" in the theological classics of the Church of the father.

the classics describe it as follows: ten thousand years ago, the great father set off a super flood that inundated the whole world in order to purify the evil of the human world. The present human civilization is the civilization developed after the disaster of extermination.

The book also warns that if you don''t believe in the Father God, one day in the future, the disaster of extermination will come again.

But it''s very special, isn''t it?

Is father a fool? Make a flood hard, even the believers drown together?

This is obviously the staff''s bluster of intimidating ignorant civilians and using fear to preach. Renault didn''t even believe a punctuation mark.

If it is not natural disaster, how did prehistoric civilization perish?

Because of foreign invasion?

Who are the foreign enemies?

The devil?

Thinking of the four extremely ferocious faces on that prehistoric relic, Renault felt that it was not impossible.

Unfortunately, he can''t go to the location marked by the "double ring sign" to see some prehistoric relics and appreciate the style of prehistoric magicians.

The northern plateau is the hometown of Heipi. Before breaking Heipi, you can''t go to the cliff.

As for the devil sea area, it is even more impossible.

It''s said that the devil''s sea area is a huge sea area, occupying almost half a planet. The area to the east of the storm''s sea area and 1500 nautical miles to the west of the glow continent all belong to the devil''s sea area.

This sea area is full of turbulence and storms all year round, and many areas are covered with permanent fog and lightning, which is far more dangerous than the storm area.

Since the beginning of historical records, all ships entering the devil''s sea are gone forever. It can be said that the devil''s sea is a forbidden area for human beings.

Re turned his head, looked straight at his island guards and a large group of slaves, and blurted out his orders.

"Terry, you lead the island protection team to log. We need enough torches..."

"Charlotte, you''ve got some people ready to transport supplies..."

"Ryan, we can start preparing dinner..."

"Everyone move quickly. We must settle down tonight. The black bastard may send magic eye to investigate tomorrow..."

Originally silent crowd immediately moved up, shouting around, the island gradually lively.

Renault soared into the air and flew to the stone mountain in the middle of Kulun island. He planned to dig a hole in the stone mountain and dig out a temporary camp to accommodate more than 800 slaves and 30 Island guards on the island.

For the sake of safety, it''s the best choice to build the camp inside the stone mountain. Just keep an entrance and cover it up. Even if the black orcs send their magic eyes to search the sea, they can''t see through it.

The safety of the cave camp is also higher, no matter how big the storm is, it is impossible to shake the stone mountain, so you can have a good rest in the cave.

The layout of the cave is similar to that of the warehouse on Midway Island. Renault dug out 12 "caves" of different lengths, nine of which are for slaves and one for the island protection team.

There are also two for special use, one for kitchen, and the other one is extra far away. This is the toilet.

This is necessary, because this nearly a thousand people can''t all go outside to pee, right? How many marks does that have to leave? As long as the devil''s eye is not blind, it can definitely see these traces.

As for heating and cooking, it''s not a big problem.

During the trip to the mainland, the fleet carried two additional thermal magic heaters. When the fleet left Kulun Island, it left a thermal magic heater and a large amount of heavy oil for the slaves on the island to use.

The hot magic heater is placed in the hidden corner of the island, and then the magic silver wire is pulled into the hole. Finally, small heaters with magic fans are placed at various positions in the cave.

Finally, connect the pipe, let the heating flow blow to every corner of the cave, a set of "central heating system" with exotic characteristics is done.The small heater is a ready-made product. It is also specially developed for the warehouse in Midway Island. Even the Lord''s mansion is using the same equipment.

The air supply pipe is simpler. It''s enough to melt directly in the stone. It doesn''t take up space and looks more neat. It''s very in line with the aesthetics of patients with obsessive-compulsive disorder.

As long as the hot magic heater keeps on, it can ensure that the cave is as warm as spring. In such a cold winter, with air conditioning blowing, it''s very comfortable to stay in the cave.

Cooking can also rely on the thermal magic energy generated by the thermal magic heater. Just slightly change the rune square board on the small heater, increase the output temperature, and the cooking heat source will be available.

In addition, when the hot magic heater burns heavy oil, it will produce a small amount of black smoke. If it is not treated, when the magic eye flies to investigate, the black smoke may expose the position of people.

But Renault also has a solution. If the exhaust pipe is directly connected to the sea water, the carbon particles in the black smoke will be absorbed by the sea water, and the problem of black smoke will be solved.

The only problem is that the pipeline needs to be made for a long time, more than 500 meters long, which takes a lot of time.

Finally, there is the problem of ventilation. There are nearly a thousand people in the cave. If there is no ventilation equipment, sooner or later people will die. Maybe half of them will suffocate when they wake up.

There is also a ready-made solution to this problem.

High power magic fan, plus the stone inside the exhaust pipe, perfectly solved all the problems.

Midway Island has been put into use, so the team members who protect the island should use it.

The only trouble is that the location of the air outlet needs to be hidden, because the exhaust is also warm air, which will melt the snow, so it is easy to be detected by the magic eye.

It''s easy to say that just like the exhaust pipe of the thermal magic heater, it''s enough to go into the sea water, isn''t it just a matter of rolling another pipe?

I have too many pipes. I''m already a good pipe maker. What''s a pipe.