Chapter 643

"Is the Longyin still there?"

Yang Xuan suddenly raised his head and asked, vaguely feeling that if he found the Longyin family, he might be able to solve all the mysteries.

Professor Gu sighed, "according to an ancient book, the whole clan of Longyin suddenly disappeared mysteriously 400 years ago. Since then, there has been no record of Longyin in history books."

"Mysteriously disappeared? Was something wrong?"

Yang Xuan asked suspiciously.

Professor Gu sighed and shook his head. "There are few records about the Longyin nationality in history. Why they suddenly disappeared has also become an eternal mystery."

After hearing this, Yang Xuan smiled bitterly. "That doesn't mean that he didn't say anything. Just, I'll take it as a story today."

The little hope that was finally ignited seemed to be dashed again, which made Yang Xuan feel very lost.

Just getting ready to get up, I suddenly heard Professor Gu say with a smile, "although there is no record on the mystery of the mysterious disappearance of the Longyin nationality in the history books, it does not mean that there is no clue left."

Yang Xuan was stunned. "Professor Gu, can you finish it all at once?"

Professor Gu smiled awkwardly, "this can't be changed. If we don't complicate simple problems, can we still be called experts?"

Then he stood up and went to the side of a wall, on which hung a huge longxia map.

Professor Gu said, "there are many mysteriously disappeared civilizations in history, such as Mayan civilization or Samsung civilization."

"The sudden disappearance of these civilizations has become a mystery for thousands of years, but they all have one thing in common, that is, at least the site has been preserved and clues have been found on the site."

"For example, Sanxingdui civilization, according to the site investigation, before the disappearance of this civilization, there was a fire and traces of fierce fighting."

"Therefore, it can be roughly inferred that this civilization may have disappeared due to the war, and the other mysteriously disappeared civilizations have left some clues more or less."

"Only the Longyin clan!"

The old professor suddenly pointed to a place in the southwest of longxia map and said, "according to various historical materials, the tribe before Longyin should be in today's Southeast Yunnan."

"But no ruins have ever been found in that place, which shows that the sudden disappearance of the Longyin nationality is their initiative, not passivity."

Yang Xuan was confused. "Is there any difference between active and passive?"

"Of course there is a difference!"

Professor Gu said, "passive disappearance refers to the demise of civilization itself, not out of their own will, caused by external force majeure, such as natural disasters or wars."

"The active disappearance shows that this civilization has chosen to hide in other ways."

"According to the past behavior style of the Longyin nationality, choosing to take the initiative to disappear is very in line with their characteristics."

"There is only one way to actively disappear, that is migration!"

Then the old professor pointed to an area next to Southeast Guizhou and said, "this area is still a blind area even for modern science and technology."

"It is surrounded by cliffs and dangerous terrain. Not to mention the scientific research team, even wild monkeys can't climb up."

"Even the most advanced modern radar, because of its unique terrain and climate, can't spy on the real face."

"So this area has always been a blind area. According to my research on the Longyin nationality for many years, I think if they migrated at the beginning, they probably went to this area."

"If my inferences are true, it is very likely that there are still descendants of the Longyin nationality in this area!"

After that, he looked at the ancient book with tadpole writing on the tea table and sighed, "if I really find them, I may be able to decipher these words, but I'm afraid I can't wait for that day in my life, alas!"

Yang Xuan stayed at the old professor's house all night and listened to him talk a lot about the legends of the Longyin nationality.

At first glance, these legends must be more mysterious than fantasy novels.

But after careful consideration, it seems that it is not groundless. After all, the old professor can make his own inference and reasons for everything he says.

More importantly, the Longyin people boasted that they were nine Heaven Sword immortals. Later, everyone was born a master of swordsmanship.

And they use this kind of tadpole text. In this way, the sword saint is likely to come from the Longyin nationality!

In other words, Professor Gu's words are not that he is crazy. It is very likely that every word is true!

This matter bothered Yang Xuan for several days. Whenever he closed his eyes, his mind was full of what Professor Gu said. Sometimes he even dreamed of the extremely mysterious Longyin tribe.

Finally, when Yang Xuan lost sleep again one night, he finally made up his mind to think so much every day. He might as well go and have a look in person. Doesn't he know everything?

Yang Xuan is the kind of character who says he can do it. He immediately found a simulated 3D topographic map and studied it carefully.

Professor Gu is right. The area is surrounded by straight and steep cliffs. The cliffs are very smooth and have no leverage. Let alone human beings, it's hard to fly even when Superman comes.

Therefore, even if Yang Xuan was forced to climb up the cliff with his bare hands, it was impossible.

According to the satellite as like as two peas, the climate in the blind area is very unique. It always shrouded thick layers of thick fog, and it never detected the situation below.

How do I get up here?

Suddenly, an idea flashed in Yang Xuan's mind, airborne!

If you can't get in from the land, don't you just jump out of the air?

Just do it!

Yang Xuan immediately dialed Zheng Tianqi. This is the longxia state, and that area belongs to the control area of the air warfare department. Yang Xuan had to say hello to Zheng Tianqi.

"Mr. Dragon King, why did you suddenly think of calling me? What's the matter?"

Zheng Tianqi was surprised to receive a call from Yang Xuan.

When Yang Xuan promised to accept the title of Dragon King, he made a request that if there was nothing big, don't disturb him.

In addition, Zheng Tianqi is the supreme commander of Longxia War Department. He manages everything every day, so they haven't contacted each other for a long time.

Yang Xuan came straight to the point, "get me a plane quickly. I'm in urgent need."

Zheng Tianqi was stunned and said carefully, "boom fighter or fighter, what do you want?"

Yang Xuan said, "why do I want those things? Get me two transport planes. I want to jump."

When Zheng Tianqi heard this, he breathed a sigh of relief. He thought that it was such a small thing. He estimated that the young dragon king had lived a plain life for a long time and wanted to find some stimulation.

"OK, there happens to be an airborne guard 200 kilometers northwest of Nanjiang city. I'll say hello to the person in charge there. You can go at any time."

Zheng Tianqi was dealing with a very urgent document at that time, so when he greeted the commander of the airborne guard, he didn't say it very clearly. He just said that a young man wanted to parachute these days and asked him to be as satisfied as possible when he came to him.

This is very casual, because it is really not a matter in Zheng Tianqi's eyes.

However, just because of his careless words, he indirectly found some minor trouble for Yang Xuan.