Qi Yang hesitated for a moment, then frowned and replied: "To pass the later levels, a lot of blood is needed. This is where the word 'blood cave' comes from."
Linger was shocked when he heard this.
Qi Yang didn't explain much, but looked at the murals.
Ling'er guessed that it would be mentioned in the mural, so she continued to look down carefully.
It turns out that the people in the paintings collected the blood in stone bowls, drank some, and then poured the remaining blood into a bucket-shaped container. The blood flowed downwards along the pipe, and then a door on the side opened.
Compared with killing people and drinking blood to quench thirst just now, bloodletting to open the door is not so scary. Ling'er was more curious at this time about how blood was used to open the stone door.
"Why does the door open as soon as the blood flows?" Ling'er turned to ask Qi Yang.
"Young lady, you'll know when you come down and take a look." As he said that, Qi Yang led Ling'er to a flat stone wall.
"It turns out the door is here!" Ling'er discovered that there was actually a stone door hidden here.
Qi Yang walked to the left side of Shimen and signaled Ling'er to bring the torch.
Ling'er came closer and shined a torch, and saw a roller, which was exactly the same as the one that opened the door of the "Blood Cave".
"Can you open this stone door by turning it?" Ling'er asked Qi Yang.
"Yes! However, no matter how hard you try, you can't turn it because the rotating mechanism inside is stuck." Qi Yang explained.
Ling'er looked in the direction of Qi Yang's finger, and sure enough she saw a stone protruding from inside, blocking the rotation of the roller.
Qi Yang continued: "To turn the roller to open the stone door, you must first remove the protruding stone."
Ling'er found that the protruding stone was located on the inside, and the gap outside was so small that it was impossible to put hands or other things in to remove the stone. She had no choice but to ask Qi Yang: "How can I remove it?"
Qi Yang took out small stones and started drawing on the stone wall. While drawing, he explained to Ling'er: "There is a crowbar inside, and the protruding stone is pressed against one end of the crowbar. As long as a heavy object falls on it, On the other end of the crowbar, the obstacle is lifted.”
"Where is the heavy object?" Ling'er asked again.
Qi Yang drew a big spoon on top of the crowbar, and then added a rolling stone inside the big spoon.
"How did you learn about these institutions?" Ling'er asked in surprise. Could it be that Brother Yang has been here before?
"I just saw it from the mural." Qi Yang replied.
Ling'er couldn't help but admire Qi Yang's extraordinary wit. She just looked at the mechanism layout diagram on the stone wall. It was so dense and complicated that she couldn't understand it at all. Unexpectedly, Qi Yang understood all the secrets in such a short period of time!
"This big spoon can be tilted." Qi Yang explained.
"If you want to make the rolling stone inside roll down on the crowbar, you only need to tilt the big spoon?" Ling'er guessed, "And to make the big spoon tilt, you need to add weight to the big spoon, such as pouring water?"
Qi Yang nodded.
"Does it have to be blood?" Ling'er asked with a frown, because she immediately thought of the poisonous water in that ditch.
"It seems so. I didn't understand why blood was necessary at first, but when I saw this, I realized that it was all calculated by the designer of the mechanism." Qi Yang pointed to a sign on the upper left side of the roller. Gap said.
Ling'er stood on tiptoes and took a look. Isn't the gap in front of her the bucket-shaped container painted on the mural?
"Girl, please see what material the pipes inside are made of." Qi Yang reminded.
"It's wooden, which means you can't use ditch water instead of blood?" Ling'er frowned.
"That's right." Qi Yang nodded, "Once the water containing 'Soul Erosion' is poured in, these pipes will no longer exist, and this stone gate will never be opened."
"The mechanism designer is so cunning!" Ling'er sighed.
Qi Yang sighed, and there seemed to be no other way at the moment.
Ling'er suddenly thought of something and said, "We can use the water we brought ourselves!"
"No!" Qi Yang objected, "We will die of thirst if we don't have water, but it won't matter if we bleed a little."
"Then use my blood?" Ling'er said timidly. Her legs felt weak at the thought of bleeding, but even so, she could not let Qi Yang lose any more blood.
Qi Yang shook his head and said: "I said, I won't let the girl get hurt!"
It turns out that this is the "injury" that Brother Yang has been talking about! Ling'er was moved.
Ling'er looked at Qi Yang's pale face and said distressedly: "You have lost too much blood, you can't bleed anymore! You'd better use water! Just bear with it if you're thirsty."
"Young girl, you think you can go out after opening this stone door?" Qi Yang asked with raised eyebrows.
"What else is behind this stone gate?" Ling'er looked worried.
"There are rumors in the world that there are seven stone gates in the Blood Cave, and as long as you go through the first six, you can pass smoothly." Qi Yang replied.
"Six paths? So many?" Ling'er said in surprise.
"Fortunately, there are seven of us. There is strength in numbers." Qi Yang comforted.
Ling'er remembered that both Ji Cangyu and Qi Yang had mentioned that to pass the later levels, everyone needed to work together, and it turned out that was really the case.
"Where does the seventh door lead to?" Ling'er asked.
"No one in the world has ever mentioned the seventh gate of the 'Blood Cave'. Even if it is the secret inside the hell, right?" Qi Yang said.
Ling'er looked back at the murals. Because they were far away and the light was dim, she could only see a rough outline.
As Ling'er approached, he counted. Those who broke through had indeed gone through six fights, and after the last fight, only one person was left alive. There is no subsequent depiction of the seventh gate.
"And these six doors cannot be opened continuously. There is a time interval between the opening of each door." Qi Yang also followed Linger and walked over.
"Why is this? Can't the stone door be opened by pouring blood?" Ling'er was puzzled.
"I don't know this. I only know that it will take us a day or two to get through the six gates at the fastest, so we can only keep the water we brought to drink." Qi Yang said.
"I understand." Ling'er responded softly.
"We have no retreat, no matter how difficult it is, we have to go on." Qi Yang said solemnly, "Have a good rest! We will discuss countermeasures after Master Ji and the others come out."
Linger nodded. She looked at the murals again and asked: "Are these murals teaching the trespassers how to break the formation? Why do I feel..."
Ling'er didn't say anything further, but Qi Yang understood what she meant and replied: "That's right. The designer of the mechanism wants to guide the passers-by to kill each other. And looking at these murals will make people have murderous thoughts and stimulate their fighting spirit."
"But not everyone who sees it will want to kill someone, right?" Ling'er frowned.
"Yes. However, as long as one of the seven people has the intention to kill, it is enough. The others will have to participate in order to protect themselves. When they are jealous of killing, how can they care about others?" Qi Yang said.
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