A few people quickly crossed the canyon covered with thorny vines and entered the bottom of the Lei Gong Hammer Mountain.

It was dark and unclear in front of them, and several people took out the miner's hat from their backpacks and put it on their heads, turned on the lights and looked inside.

However, he found that the canyon was only about three meters away, and it came to an abrupt end.

However, on the top of this canyon, there is a huge space because of the lack of thorn vines.

Bai Yang jumped up first, Tie Niu lifted Hongxing, Ding Lingling, and Wang Yifei a little below, and Bai Yang stretched out his hand on the top, and easily pulled the three of them to the top.

Immediately after that, the Iron Bull jumped up, and the poplar stretched out his hand again, and the Iron Bull jumped to the top.

Soon, they discovered that the large space that stretched into the rocky mountain was at least fifty meters wide.

The top of the space is in the shape of an arc, and the highest point is more than five meters.

The few large stones that Poplar had jumped over with the help of his strength were at the very edge of the right side of the space.

The ground beneath your feet and the rocks at the top were as smooth and hard as the canyon, as if they had been melted by thousands of degrees of heat.

"It's really like something cut in!"

Everyone else felt the same way, and was silently observing, when Tie Niu suddenly said, "I know what happened to that canyon just now!"

Everyone immediately turned their heads to look at Tie Niu, waiting to hear what he had to say.

"That's the mark left by a landing stand on an alien spaceship, like the wheels of an airplane. But the three wheels are the most stable, so I guess there are two canyons outside, but they are covered by thorn vines and we can't see them!"

He looked at the others, waiting for their speculation to be judged.

Bai Yang nodded in agreement first, and Hongxing couldn't help but glance at Tie Niu, and said with a smile: "I didn't expect you to have such a clear mind!"

"Of course!" Tie Niu laughed and puffed out his chest, "Even Lao Bai said that I am usually confused, but often as soon as I open my mouth, I can mention the key to the problem!"

"Say you're fat, you're still gasping!" Hongxing smiled and chased Ding Lingling to the front of the space.

The space was not too deep, and a few people had only walked more than ten meters before they had reached the end.

However, this also happens to be in line with the situation where the "spaceship" falls. After all, the bottom of this Lei Gongzhu Mountain is full of hard rocks, and the fact that the "spaceship" can cut into the mountain more than ten meters is enough to prove how great the impact force of this "spaceship" is when it falls.

Of course, the conjecture of the "spaceship" is not yet proven by any evidence. However, the end of the space is very sleek, and the two sides are in the shape of an arc, as if two large discs are pressed together.

Then Bai Yang's heart moved, and Tie Niu called out directly: "Flying saucer! Look at this edge, does it look like the legendary flying saucer cut in?"

"It's really similar!" Poplar nodded first, "If this is really the trace left by the alien spaceship, then the shape of the alien spaceship really looks like the UFO report mentioned in the saucer!"

"You always mention alien spacecraft, how is this possible?" Wang Yifei couldn't help but argue, "First of all, the flying saucers mentioned in the UFO report are all claimed to have been witnessed by modern people, could it be that there was such a flying saucer-shaped alien spacecraft falling in ancient times, and there are so many alien spaceships that frequently descend on the earth in modern times?"

"This is actually not difficult to explain!" Ding Lingling spoke, she was the most patient one, and at the same time she spoke the most organized, "First of all, the flying saucer is the most ideal aircraft shape, this shape can greatly reduce friction in flight, which has been recognized by the scientific community, but with our earth's science and technology, we can't build this kind of flying machine! Or in science fiction movies, alien spaceships are depicted in the shape of flying saucers, and over time, many people who have seen UFOs with their own eyes, or just imagined UFOs out of thin air, will see them. Secondly, two thousand years is a very long time for our earth, but for an alien spacecraft that can travel thousands of light-years in the vastness of space, two thousand years is just a snap of a finger, perhaps it is because an alien spacecraft fell to Earth two thousand years ago that more alien spacecraft came to Earth to find their companions? It's just that with the technology of our earth, at most, we can occasionally see the figure of an alien spaceship, but we can't track and monitor it at all!"

Ding Lingling's words made Bai Yang first applaud and applaud in approval.

Hongxing also nodded again and again, and Tie Niu looked at Wang Yifei with a smile, seeing if he was still unconvinced.

But seeing that Wang Yifei still shook his head, he said: "I can't say Lingling! But, if this large space is really formed by the alien spacecraft falling to the ground, can it ...... What about the wreckage of the ship? Why can't you find a piece of wreckage?"

Ding Lingling opened her mouth, closed it again, and looked back at Bai Yang, waiting for him to explain to Wang Yifei.

Poplar thought about it a little and decided to tell the truth.

"According to our speculation, it is possible that Qin Shi Huang sent people to find the wreckage of the spaceship, and then took the wreckage of the spaceship, and most likely the aliens on the spaceship, to other places to settle down. ”

"My God, it's Qin Shi Huang again!" Wang Yifei patted his head, looking like he was about to faint, "But you can see that the rock mass of this big mountain is so hard, and you also said that the reason why the surface of this space is so smooth is because the ultra-high temperature generated by friction has melted the rock surface! Since the rock surface has been melted, the wreckage of the alien spacecraft should be integrated with the mountain rocks, with the industrial technology of the Qin Shi Huang period, how can it be possible to strip the wreckage of the alien spaceship from the mountain rocks cleanly?"

He asked this question very sharply, and Bai Yang was pondering, but Ding Lingling shook his head and said, "No!"

"What wouldn't?" Wang Yifei immediately asked.

"I mean, the wreckage of an alien spaceship won't blend with the rocks of the mountain!" Ding Lingling replied.

"Not bad!" Poplar followed, "First of all, all the corners of this space are cut so neatly that it proves that the surface of the alien spacecraft is extremely hard, and it did not cause much damage after hitting the rock mass; secondly, I read from science fiction magazines that the surface of the space shuttles and spacecraft in the United States and the Soviet Union are coated with heat-proof coatings to prevent the space shuttles and spacecraft from burning out by violent friction with the air, and I think the surface of the alien spacecraft must also have this coating!" Since there is this kind of coating, there will be no fusion and sticking between the natural alien spaceship and the molten rock mass!"

"My thoughts are the same as Poplar!" Ding Lingling quickly answered.

Wang Yifei had nothing to say, just kept shaking his head.

Bai Yang and the others couldn't talk too much to him, so they could only look at each other.

Tie Niu suddenly said: "I just saw a wild goat jump in, why is there no trace of a wild goat here?"

Bai Yang immediately knew that Tie Niu was not only suspicious, but more to change the topic, so he smiled at Tie Niu and said: "Actually, I'm also very strange, I came down from the place where you said that the wild goat jumped down, and found that the place was very steep, and the wild goat could jump down, but it might not be able to escape, so ...... Let's look along the edge, maybe there's another way out there!"

Several people agreed in unison, and just as they were about to disperse to search, the two jade hummingbirds, which had been resting on Ding Lingling's shoulders, suddenly flew up with a scream.

Ding Lingling was shocked in her heart, and immediately approached Baiyang.

At the same time, Bai Yang caught a glimpse of the shadow, and immediately shouted, and the black sword slashed towards the shadow and Ding Lingling.

But the shadow came so fast that it seemed to appear out of nowhere.

By the time the poplar black sword fell, the shadow had already grabbed Ding Lingling with one hand.

Ding Lingling had no way to avoid it, so she had to lean towards the ground and fall down.

The shadow probably didn't expect Ding Lingling, a female streamer, to react so quickly and flexibly, and couldn't help but let out a "huh" sound in her mouth.

In the blink of an eye, it was clear that the man was dressed in black and masked in a black scarf, and he was the man in black, the biggest enemy of the poplar iron bull.

And with the speed of the man in black, as long as that hand continues to stretch forward, he can still grab Ding Lingling.

But Poplar's black sword was split down at this time, and if the man in black didn't withdraw his hand, he would first have his wrist cut off by Poplar.

The man in black sneered, put aside Ding Lingling and ignored it, but between flashes, he grabbed an Emei thorn with his other hand and stabbed it in Bai Yang's chest.

In order to save Ding Lingling, Bai Yang's sword was slashed, completely exposing his own chest in front of the man in black.

Seeing that the man in black was stabbed, Poplar was also unavoidable, and had to lean back, and at the same time, the black sword swept away, not allowing the man in black to chase after him.

In an instant, Ding Lingling fell to the ground and rolled, and Bai Yang was also forced to fall to the sky with a stab from the man in black.

Fortunately, the continuous gunshots rang out, and Tie Niu was afraid that the rescue would not be in a hurry, so he directly took out his gun and shot at the man in black continuously.

The shrill sound of gunfire echoed through the grotto, interspersed with the sneering voices of the black-clothed men.

Poplar fell to the ground on his back, catching a glimpse of the figure in black flickering, dodging all the bullets fired by the Iron Bull, and Poplar immediately rolled on the ground, and the black sword slashed at the ankle of the man in black.

The man in black jumped quickly, but he was in mid-air, and he was suddenly not so agile and fast, so he heard his "oops", as if he had been shot by the iron bull pistol.

Tie Niu shouted with great joy: "Lao Bai, this bastard was shot by me, we must kill him today!"

As he spoke, he shot even more.

The man in black scolded: "Little cub!" But he knew that with Tie Niu's ability, it would be difficult for him to have a chance to get close to Tie Niu, so he could only flash his figure and jump into the canyon that Bai Yang and the others walked into.

"This bastard is going to run!" said Iron Bull, and ran close to the canyon.

Poplar turned over and jumped up, and shouted: "Old black, stop!"

As soon as Tie Niu Fang stopped, Poplar had already flown past him and jumped directly into the canyon.

"Be careful, old white!" shouted Iron Bull.

"You protect Lingling, they are!" Poplar's voice came from afar.

(See Chapter 528 of "Grotto Depot")