You must know that the reason why the five Donglan countries have not been able to cross the sea for so many years is partly because of navigation technology. Before the advent of the compass, it was impossible to even identify the direction at sea.

The traditional way of identifying directions basically relies on the accumulation of navigation experience, such as mountains and rivers in different areas of the sea, etc.

Therefore, within the well-known sea areas, as long as there are experienced fire chiefs and boat masters, you will basically not encounter any big problems. However, if you want to sail far to face those unknown sea areas, the risk will be too great.

!

Putting aside extreme weather, as long as the ship encounters any currents and reefs, it will basically never return.

But it would be different if there were nautical charts!

As long as you follow the route inside, the ship can avoid various known risks to the greatest extent.

She was still guessing before, whether the world over there had a breakthrough development in navigation technology, so the person named Kong could come here. Now it seems that they can come here because of this.

A voyage map.

But even so, this is not a simple matter.

After all, current technology cannot predict extreme weather at sea, and with such a long sailing distance, just replenishing food and fresh water is not an easy task.

They are really lucky to be able to get here smoothly!

Lu Yunluo touched her chin. Now the marine steam engine has been made. Soon, Donglan's first steam engine ship will go to sea to explore the unknown sea area. If she can have such a voyage map in hand, then she will go to sea in the future.

It can reduce the risk of navigation by more than half!

"Sir, why don't I leave this voyage map with you?" The old man suddenly felt a little uneasy for some reason, always feeling that someone was thinking about the thing in his arms.

Kong Yue frowned and said, "Make another rubbing!"

"yes!"

The old man also felt that it was really unsafe to have such a copy, so he quickly sent someone to find pens, inks, paper and inkstones to start grinding and rubbing.

Just now, Lu Yunluo was thinking about how to get the voyage map from the old man. The next second, she heard that they wanted to make a rubbing. The old man also specially found a convenient location for copying, and Lu Yunluo hid there.

on the edge of the corner.

The voyage map is facing Lu Yunluo.

Looking at the voyage map spread out in front of her, Lu Yunluo felt that the voyage map that was delivered to her door was not in vain!

While the old man was studying the ink, Lu Yunluo picked up a stone on the ground and flicked it towards the vase opposite.

The stone hit the vase with a dull sound, and then the vase shattered to pieces.

When the stone passed by the old man, the old man noticed it immediately.

"Who?"

The old man raised his head suddenly, but saw nothing. It was not until the sound of the vase breaking that he heard from behind that he subconsciously turned back to look at the vase.

That's it!

The slender and white hand appeared out of thin air in mid-air, and then, the voyage chart spread out on the table just disappeared!

After Kong Yue heard the noise here, he quickly followed.

"What's going on?"

Kong Yue asked.

The old man also looked puzzled. He felt as if a hidden weapon flew over just now, but there was no one in that direction.

"Where are your voyage charts?"

Kong Yue asked, staring at the table.

"It's right here!"

The old man turned around as he spoke, then froze!

He rubbed his eyes and looked at the empty table with a shocked expression.
Chapter completed!