Qi Yang hesitated for a moment before frowning and replied, "It takes a lot of blood to pass the later levels. This is where the word 'blood cave' comes from. ”

Ling'er was shocked when she heard this.

Qi Yang didn't explain much, but looked at the murals.

Ling'er guessed that it would also be mentioned in the mural, so she continued to look down seriously.

It turned out that the people in the painting had taken the blood from a stone bowl and drank some of it, and then poured all the rest of the blood into a bucket-shaped container. The blood flowed down the pipe until a door opened.

Compared with killing people and drinking blood to quench thirst, bloodletting is not so terrifying. Ling'er was even more curious about how the blood was used to open the stone door at this time.

"Why did the blood go down and the door opened?" Ling'er turned her head and asked Qi Yang.

The girl came down and took a look, and she knew. With that, Qi Yang took Ling'er to a flat stone wall.

"So the door is here!" Ling'er found out that there was actually a stone door hidden here.

Qi Yang walked to the left side of the stone gate and motioned for Ling'er to bring the torch over.

Ling'er approached and shone it with a torch, and saw a roller, exactly the same as the one that opened the door of the "Blood Cave".

"Turn it to open this stone door?" Ling'er asked Qi Yang.

"Yes, but no amount of effort can turn it, because the 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 it, 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 inner side, and the gap on the outside was so small that it was impossible to put his hand or anything else in it and move the stone. She had no choice but to ask Qi Yang, "How can I move it away?"

Qi Yang took out a small stone and drew it on the stone wall, and explained to Ling'er while drawing: "There is a crowbar inside, and the protruding stone is pressed on one end of the crowbar, as long as a heavy object falls on the other end of the crowbar, the obstacle will be lifted." ”

"Where is that heavy object?" Ling'er asked again.

Qi Yang drew a large spoon above the crowbar, and then added a rolling stone to the large spoon.

"How did you learn about these mechanisms?" Ling'er asked in surprise. Could it be that Brother Yang has been here before?

"I saw it from the mural at Xiashi. Qi Yang replied.

Ling'er couldn't help but sigh at Qi Yang's wit. She also glanced at the layout of the mechanism on the stone wall, which was so dense and extremely complicated that she couldn't understand it at all. I didn't expect Qi Yang to comprehend all the mysteries of the mechanism in such a short period of time!

"This scoop is tiltable. Qi Yang explained.

"If you want the rolling stones inside to roll down the crowbar, you just need to tilt this big spoon?" Ling'er guessed, "And to tilt the big spoon, you need to add weight to the big spoon, such as watering?"

Qi Yang nodded.

"Do you have to use blood?" Ling'er asked with a frown, as she immediately thought of the poisonous water in that ditch.

"It seems to be so. Originally, I couldn't understand why I had to use blood, but when I saw this, I realized that all this was in the calculations of the designers of the mechanism. Qi Yang pointed to a gap in the upper left of the roller and said.

Ling'er stood on tiptoe and looked, wasn't the gap in front of her the bucket-shaped container painted on the mural?

"Girl, please see what the pipes are made of. Qi Yang reminded.

"Woody, that means you can't replace blood with water from the ditch?" Ling'er frowned.

"Not bad. Qi Yang nodded, "Once the water containing the 'Soul Eclipse' is poured in, these pipes will cease to exist, and this stone door will never be opened." ”

"The designer of the mechanism is too cunning!" Ling'er sighed.

Qi Yang sighed, and there seemed to be no other way right now.

Ling'er suddenly thought of something and said, "We can use the water we brought!"

"No!" Qi Yang objected, "We will die of thirst without water, but it is nothing to shed a little blood." ”

"Shall we use my blood?" said Ling'er, a little timidly. She felt weak at the thought of bleeding, but even so, she couldn't let Qi Yang lose any more blood.

Qi Yang shook his head and said, "I said that I won't let the girl get hurt!"

It turned out that Brother Yang had always said that "injury" was this! Ling'er was moved in her heart.

Ling'er looked at Qi Yang's pale face, and said distressedly: "You have lost too much blood, you can't bleed anymore! Let's use water! Just endure it when you are thirsty." ”

"The girl thinks she will be able to go out after opening this stone door?" Qi Yang asked with an eyebrow.

"What's behind this stone gate?" Ling'er looked worried.

"It is rumored that there are a total of seven stone gates in the 'Blood Cave', and as long as you pass the first six, you can pass the level smoothly. Qi Yang replied.

"Six Dao, so many?" Ling'er said in surprise.

"Luckily, there are seven of us, so there is a lot of strength. Qi Yang comforted.

Ling'er remembered that Ji Cangyu and Qi Yang had mentioned that everyone needed to work together to pass the later levels, and it turned out that this was really the case.

"And where does the seventh gate lead?" Ling'er asked.

"No one in the rivers and lakes has ever mentioned the seventh gate of the 'Blood Cave', even if it is a secret inside the hell, right?" Qi Yang said.

Ling'er looked back at the murals, and because they were far away, the light was dim, and she could only see a rough outline.

Ling'er approached and counted as she counted, those who broke through the level had indeed gone through six battles, and after the last battle, only one person was left alive. There is no further depiction of the seventh gate.

And these six doors cannot be opened consecutively, and each door is opened at intervals. Qi Yang also followed Ling'er over.

"Why is this? Isn't it possible to open the stone door by pouring blood?" Ling'er was puzzled.

"I don't know that even below. I only know that it will take a day or two for us to break through the six gates at the earliest, so the water we bring can only be kept for drinking. Qi Yang said.

"I see. Ling'er replied softly.

"We have no way back, no matter how difficult it is, we have to go on. Qi Yang said in a deep voice, "Take a good rest! Wait for the owner of the village to come out, and then discuss countermeasures." ”

Ling'er nodded. She looked at the murals again and asked, "Are these murals teaching the trespassers how to break the formation......?"

Ling'er didn't say any more, but Qi Yang understood what she meant, and replied, "Not bad." The designers of the mechanism wanted to lead the interlopers to kill each other. And looking at these murals will make people feel murderous and arouse fighting spirit. ”

"But not everyone wants to kill someone when they see it, right?" Ling'er frowned.

"Not bad. However, as long as one of the seven people has murderous intent, it is enough. Others will have to get involved in order to protect themselves. When they are so angry, how can they care about anything else?" Qi Yang said.

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