Renault skimmed over the water and put the supernatural soul into the book of thermodynamics.

Renault''s idea of this trip to the mainland moved. Two Shura guns fell into his hands, and the ferocious Shura pattern on his back suddenly moved. Eight Shura whips popped out rapidly and swayed wildly in the air, just like an eight clawed demon.

Shura battle armour crossed an arc in the air and smashed into the roof of a tall wooden house.

In the rain of sawdust, Renault saw black faces in horror and heard cries of fear.

With a grim smile, he rushed into the flustered crowd without hesitation, and the eight Shura whips were wildly waved.

Flesh and blood fly together, fear and death dance together, and the house turns into a bloody slaughterhouse.

After more than 30 black orcs were slaughtered, Renault broke through the roof, ran into the sky, and rushed to the next target. Behind him, a large flame raged around the house, and the smoke rolled up.

More than 20 minutes later, black clouds filled the sky over Maas port. Most of the ports were reduced to a sea of fire, and all the sailing boats moored at the port were also turned into fireboats.

At this point, the black Orc fleet completely destroyed.

Renault took a tour over the harbor, enjoyed his masterpiece, then went straight into the sky, and soon disappeared in the wind and snow.

He won''t be back in the next few months.

This time, they burned a village, a town and a port on the mainland, slaughtered nearly 10000 black skins, and caused a "great disaster". It is impossible not to disturb the black orcs.

Renault guessed that in a few days, there will be a team led by upanists themselves to investigate the matter. Maybe there will be more than one.

This investigation team must be full of extraordinary people. In order to avoid hitting the muzzle of the gun, the safest way is to stay away.

Moreover, in the future, the black orcs will focus on the defense in this area, and there may be some upanists stationed here for a long time.

In addition, for Renault himself, the harvest of this trip to the mainland is not great.

Although he killed thousands of ordinary black orcs and nearly 50 awakened ones, with the book of thermodynamics evolving several times, when he devoured the souls of ordinary black orcs, the feedback energy was less and less, and the energy gained after killing the awakened ones was not as good as before.

Therefore, these thousands of ordinary black orcs provide him with less energy than a superman.

The only harvest worth mentioning is the souls of two ice extraordinary people, which is not enough to open page 6.

The island of Kulun.

It was just dark, and Renault stood on the reef on the shore, watching the figure of Odin and Haichao disappear into the night.

The two sailboats will carry the first slaves to Midway Island, and then return to carry the second slaves, a round trip of more than 1000 nautical miles.

Even if you sail at full speed at gear 3, it will take at least two days. If you encounter a storm midway, it is normal to delay for three or four days. In other words, Renault and others need to wait for at least five days on Kulun island.

Renault looked up at the dark sky and sighed.

In the middle ages of the earth, sailing at night was a very dangerous thing for windsurfing ships. In the case of extremely low visibility, it was easy to touch the rocks and staged a shipwreck tragedy.

Therefore, the sailing boat will strictly follow the habit of resting at sunset. Once it''s dark, the sailing boat will stop sailing, either moor in the port, or drop the anchor to anchor at sea, and then set sail after dawn.

If you have to sail at night, you will only take the safer channel. This kind of channel is often along the coast. There are many signs such as lighthouses on the shore, which can guide the direction from beginning to end.

If it''s a long-distance voyage, navigators will use star navigation at night, such as Polaris, which has a fixed position.

The specific method is to use tools such as "Jacob''s rod" and "sextant" to measure the deflection angle, so as to determine the dimension, and then sail along a fixed latitude. This method can effectively determine the course and avoid being lost.

On earth, this technology is known as "latitude navigation.".

As for the determination of longitude, it was not until the appearance of the nautical clock that European white leather solved the problem of longitude. This method also needs celestial bodies as a reference.

Its principle is actually very simple. The same celestial body has different positions in different time and different time zones. Observing the position of celestial body can determine the local time.

By comparing the time displayed on the navigation clock, we can know the time difference between the two and calculate the longitude.

Therefore, with the development of dimension and longitude, the key problem of navigation, positioning, has been solved.

To sum up, the so-called navigator is a group of people who look at the stars, the moon and the sun every day.

If the weather is bad and the celestial bodies are covered by clouds, what should we do?

It''s cold. Either stop and don''t run, or run around.In the age of no GPS, the people of the earth are so hard pressed. It depends on the face of the God to navigate the sea and fix a position.

So, how can the people of other countries solve the problem of positioning?

Is it the face of the Lord?

No, they look at the face of magic.