Perhaps because the history of the Ruth people was too long, and the culture was too long, the fire burned for a long, long time, and finally went out because the oxygen in the room was exhausted.

The library was already in shambles, rows of bookshelves and countless books had been burned to ashes, and dozens of Russ corpses had been scorched.

It was only at this time that Huang Xinghai sent a message to Shen Xinyi and the others, telling them that they could come in.

"Boom!" After a while, the door of the stone room was opened again, and Shen Xinyi and others walked in.

They turned their heads to look left and right, and soon saw the charred corpses of the Ruths, and the sea of yellow stars standing beyond the ashes.

He stood alone, blackened, still holding the stone sword in his right hand, but his left arm was gone, revealing a few wires of light.

"Xinghai, are you okay?" Shen Xinyi walked over and asked with concern.

"It's okay! I just lost my left arm, anyway, my battle body is picked up garbage and put together, and it's worthless. Huang Xinghai laughed, his face had been blackened, and this smile looked ugly.

Somehow, Shen Xinyi suddenly felt a little sad when she saw Huang Xinghai's funny smile.

Of course, she knew that Huang Xinghai's family conditions were not good, and even this battle body was picked up and put together, and Huang Xinghai was also very silent and inconspicuous in the class on weekdays.

And she has lived a good life since she was a child, won awards in various music competitions, and has always been in the aura, seeing a poor boy like Huang Xinghai, relying on his own efforts to put together a tattered battle body, and coming to this interstellar difficult to break through, inexplicably felt a sense of sympathy.

"Xinghai sauce, we were supposed to protect you, but it turned out that you protected us!"

"Thanks to you just now, we were able to escape!" Lu Ran changed his previous giggle and said seriously.

"So be it! The harvest of our trip, first fill in the loss of Huang Xinghai, and we will divide the rest equally! Liao Ziyi made a suggestion.

Of course, everyone had no opinion.

They scattered again and looked for a while in the ruins, Huang Xinghai's left arm had naturally been burned to ashes, but Lu Ran's shield was not damaged, it was made of special alloy, but it was blackened.

As for the weapons and other relics of the Ruth people, they basically didn't have much value, they were all made of ordinary metal, and everyone didn't want them.

Next, they all entered the stone chamber where the group of Ruthians was sleeping.

At the end of the chamber are more than a dozen lifelike statues of the three-headed dogs of hell, all of which move differently, as if they are dancing, as if they are hunting, and they are alive.

Everyone searched around for a while, but they didn't find anything else, if there was any mechanism, it should be on the bodies of the dozen or so three-headed dogs of hell.

"Hide behind me, I'll move these statues." Lu Ran said, raising the black shield in front of those statues.

Everyone immediately hid behind her and gathered in a group, keeping an eye on her movements.

Lu Ran tentatively raised the electric baton and gently stabbed a statue of a three-headed dog from hell.

"Woo~" A sad wolf howl suddenly came out from the statue.

Everyone's hearts froze, as if they heard a blue wolf howling at the sky on the vast grassland, with a wild and murderous atmosphere, and they all clenched their weapons.

However, after waiting for a while, nothing happened.

Lu Ran simply raised the electric baton again and stabbed the statue of another three-headed dog of hell.

"Whew~" The statue let out a gloomy wolf howl, but nothing changed.

Lu Ran tested a few more statues, and each statue would make a wolf howl as soon as it was touched, and there was no other reaction except for the different wolf howls.

Everyone walked out from behind Lu Ran, gathered around the group of statues, and thought.

Liao Ziyi paced back and forth with a pair of long legs, and muttered: "These statues should be mechanisms, the key should be in their sounds, and they may have to make a response cry in a certain order before the mechanism is opened." ”

Huang Xinghai suddenly said: "Those puzzle mechanisms before are also related to the three-headed dog of hell, every time they are opened, a wolf howl will be emitted, could it be that order?" ”

"Huh? It's a possibility! Everyone was reminded of this, and they immediately felt justified.

Huang Xinghai thought about it for a moment and continued: "The first puzzle mechanism we encountered was in the stone room full of cannon holes, after the puzzle was completed, the wolf howl was rather gloomy and sad, a bit like the feeling of D minor, but I am not very sure, the last note I remember seems to be la or si. ”

"It's B-down, I remember it very clearly." Shen Xinyi immediately said, "When we took the torches, the second puzzle mechanism on that alcove was a relatively calm wolf howl, which was the feeling of C major. ”

"yes, I heard that, too." Huang Xinghai nodded and said with a smile: "The third puzzle mechanism hidden behind the bookshelf just now, when it was opened, there was a sad wolf howl, it should be in F sharp minor, this key is almost that feeling." ”

Everyone listened to Huang Xinghai and Shen Xinyi's chat with a blank face, as if they were listening to a book from heaven.

"Oh my God! Now to explore alien ruins, do you still need to know some music theory knowledge? Lu Ran spread his hands and said helplessly.

"It's not complicated, you know a little bit of a musical instrument." Shen Xinyi comforted.

"Let's look for those three wolf howls!" Huang Xinghai said, touching each statue in turn, listening carefully to each wolf howl, and comparing it with the one in his memory.

After hearing the cry of the third statue, he suddenly stopped, pointed to the statue, and said, "This should be the second wolf howl." ”

"Yes, there's nothing wrong with every note." Shen Xinyi nodded and smiled, and began to touch the statues one by one, distinguishing different wolf howls.

In this way, it took them a few minutes to finally find the statue corresponding to the three wolf howls.

"Alright, let's touch these three statues in order!" Shen Xinyi said, touching a statue beside her.

"Whew~" A gloomy and sad wolf howl sounded.

Then, Huang Xinghai immediately touched another statue.

"Woo~" A calm wolf howl sounded.

Shen Xinyi hurriedly walked to the other side and pressed the wolf head of a statue.

"Woo~" A sad wolf howl sounded.

"Boom!" After the three wolf howls rang out one after another, the hall suddenly shook violently, and one wall suddenly parted to both sides.

In an instant, a dazzling treasure light poured out from inside, illuminating the entire stone room, and everyone's bodies cast long shadows.