In the end, curiosity overcame the fear of danger, and Axiang agreed to explore the island where the treasure map was located.

Of course, not all sailors agreed to explore the unknown. Most of them just followed Nagamasa to make money. This trip they got a lot of pirates' treasures, enough for many people to squander on shore for a few years before going back to sea.

When people's needs are met, they become indifferent.

That is what is commonly known as making enough money.

Nagamasa did not make things difficult for them.

The sailors who were willing to go with him went on board, while the rest stayed on the island and waited for their return.

At the same time, Nagamasa also made an agreement with the sailors who stayed behind that if he did not return after a month, then all the ships and treasures would be left to the remaining people.

After all, if there is no news for a month, it is most likely that it has been sent.

Of course, it is also possible that these sailors would run away as soon as Nagamasa and his crew set out and take the treasure back, so Nagamasa took the nautical chart and the crew member in charge of navigation followed him. Without these two things, it would be difficult for the remaining crew members to cross the ocean and return home.

The most they could do was wait for the merchant ships that passed by once a month to ask for help, and only then would they have a chance to find their way home. Therefore, they would have to stay on the island for two or three weeks anyway.

Not to mention that if Nagamasa found the treasure and came back, he would discover that these sailors had betrayed him. After returning to the mainland, these traitorous sailors would definitely be caught and hanged as pirates.

The best option for the sailors who stayed behind was to fish quietly on the island for a month and then make plans, unless there was a sudden typhoon at sea or other pirates came.

Nagamasa may seem like a hot-blooded adventurer with no brains, but he is actually quite calculating.

After the personnel were assigned, one-third of the people were missing from the ship, and the sailors' work became busy.

Riding the wind and waves, following the markings on the treasure map, the ship began to move towards its destination.

"Speaking of which, how do you sail in the doldrums?"

While eating, Lu Ban asked A Xiang.

The dinner on the boat was fish soup, which was made with the fish caught and the bacon and dried vegetables stored previously. The taste of the soup was just edible.

At sea, fresh water and vegetables are both precious resources. As we all know, fresh water is precious. Without the vitamin supplement of vegetables, sailors will easily get sepsis. Therefore, most ocean-going ships now store some dried vegetables and a large amount of wine as cheap vitamin supplements.

"We got a device that can be powered by burning alcohol, which can turn in the water and propel the boat forward."

Nagamasa took a sip of the fish soup, eyebrows furrowed, and explained.

“That’s really amazing.”

Lu Ban exclaimed in admiration.

This might sound familiar.

"This was made by the best craftsman in the city. It was said that it was provided to the government. I only got this one through connections."

Nagamasa said boastfully.

"Can we take a look at it later?"

Lu Ban asked again.

"sure!"

Thinking about showing off his treasure, Nagamasa drank the fish soup a little faster.

After having a good meal and a few drinks, he brought Lu Ban and the others to the deep part of the cabin, where there was a rather large machine covered with cloth, which looked quite mysterious.

"This is the device. When the time comes, we will assemble it on the back of the ship, and then we can sail smoothly in the doldrums!"

As Nagamasa spoke, he lifted up the cloth.

A rather strange machine appeared before people's eyes.

It was somewhat different from the propeller that Lu Kan had in mind. Most of the structure of this device was exposed, and it was made up of a large number of gears and bearings. Rather than a durable engine, it looked more like some kind of work of art, with a very steampunk style.

Lu Ban came to the front of the device, put his hand on it, and countless words appeared.

[A masterpiece created by a flash of inspiration from a great craftsman, a small step for mankind into the steam age]

[It can be driven as long as there is enough alcohol, making sure the user is not an alcoholic]

[Some designs that are ahead of their time may cause minor troubles, but you don’t have to worry as long as you suppress your curiosity]

[Suggested retail price: None]

Unexpectedly, this thing actually works.

Lu Ban thought about it. As far as he knew, there was no such equipment on the island. Did this mean that the manufacturing technology of this thing might have been lost later?

Moreover, judging from the description of the item, it is not entirely the result of the technological development of this foreign land. The craftsmen who designed and manufactured it have more or less drawn inspiration from other foreign lands and have been contaminated to a certain extent.

It is even possible that this device contains some undetectable contamination. You can only use it and do not try to analyze it.

In fact, even if this device was just a scam and poor Nagamasa was fooled again, Riku Kan also had a way to make the ship sail in the doldrums, so it was not a big problem. But seeing this device still made him more curious about the future development of Kazushima.

Back on deck, the moonlight was dim, but the stars were extremely bright.

They form different shapes, which are arranged into constellations by the magnificent imagination of the ancients to guide the direction of navigation.

This starry sky is completely different from the one Lu Ban saw on Earth, and those constellations also have their own names.

Lu Ban noticed that A Xiang was sitting by the railing on one side of the ship, writing something in a notebook.

He moved closer and found that the sea on that side seemed to be emitting a faint glow.

"It's a jellyfish. To be more precise, this type of tracer jellyfish can only be seen in the open sea. They live in groups and use light to attract small fish. They then prey on the small fish caught by the fishing line."

A Xiang looked at the sea and said.

In the light, you can see countless jellyfish swaying and floating in the sea, attracting schools of fish to swim among them. From time to time, the fish stop swimming and are entangled and wrapped by the tentacles of the jellyfish, becoming nutrients that nourish their growth.

"It is said that this jellyfish can cure diseases, but there are so few samples that only rich people can buy them."

Due to the underdeveloped ice-making technology, deep-sea fishing is difficult to achieve in Hedao. Even people living on the coast may not be able to come into contact with creatures in the deep sea, let alone come to such sea areas specifically to study the ecology.

"The presence of these jellyfish is a good sign because they only appear in the cleanest, clearest waters and are food for another organism."

A Xiang pointed to the distance, and Lu Ban saw that under the shining starlight, a black shadow was slowly approaching, parallel to the ship, swimming towards the swaying light.

The next moment, the black shadow revealed its appearance as it was illuminated by the light. It was a huge whale. Its fins flapped like wings, and its huge body emerged from the sea, with a mouth full of tracer jellyfish.

The whale's body was nearly transparent, and you could see the faint light emitted by the jellyfish after they were swallowed into its stomach. It fell into the water, causing huge waves, and then quickly dived into the deep sea, disappearing without a trace.

"This is a water whale. Most of their bodies are made of water, which makes them very fast swimmers and good at hiding themselves. Fortunately, they are not aggressive and are actually very docile animals."

A Xiang explained again.

"These organisms form a perfect food chain in the ocean. They can keep the cycle going and last forever."

He sighed.

“Forever.”

Lu Ban repeated.

He knew very well that these creatures would no longer exist in the future Hedao.

No matter how brilliant the civilization and ecology are, they will be reduced to nothingness under the erosion of pollution.