Although the cave is on the ground, it is not straight down, but has a certain slope, but it is very steep. After Jiang Xingchen and Tang Chuxue entered the entrance www.biquge.info of the cave, they stood on a slope.

As soon as they entered it, the sight of the two of them was full of red, Jiang Xingchen immediately felt the pressure around him, Yuanquan's energy was consumed very quickly, and it could be seen that the temperature in this cave was definitely not lower than the red pillar of light just now.

Jiang Xingchen frowned, this situation was a bit unexpected. He had expected that once the hole was sealed, the red glow would fade. If it is as high as the pillar of light all the time, the stone walls of the cave will be roasted and melted, and the cave will turn into a piece of magma.

But the actual situation at the moment was unexpected, the temperature of the cave was much higher than expected, and his consumption was greater than expected. But when I looked around, I found a strange phenomenon, there was nothing wrong with the stone walls around and under my feet.

"Huh?" Jiang Xingchen was secretly surprised in his heart, just now outside he clearly saw that there were traces of rock melting and solidification at the entrance of the cave, how could the walls inside the cave be normal. Even if the scorching energy of the red pillar of light spreads very little outward, it will hit the stone wall, and the rock at the entrance of the cave will not be burned, but the cave will be fine. What's more, the energy did not subside after the closure.

Discovering this strange phenomenon, Jiang Xingchen couldn't help but stand still, frowning and thinking.

"Xingchen, what's wrong?" Tang Chuxue was surrounded by the formation and couldn't feel the situation outside, but he could see that Jiang Xingchen's expression was wrong.

"It's too hot here, but there's nothing wrong with the stone walls inside the cave, don't you think it's a little strange?" Jiang Xingchen asked.

"How tall?" Tang Chuxue asked, she couldn't feel the temperature outside.

"At least fifteen hundred degrees, not lower than the pillar of light!" Jiang Xingchen replied.

"That's right...... It's weird!" Tang Chuxue nodded, since Jiang Xingchen said fifteen hundred degrees, it would definitely not be less than sixteen hundred degrees, and he had always been conservative in his words. At these temperatures, the rock will never remain normal even if it does not melt.

After thinking about it, Tang Chuxue said, "Will it be ...... Is it the special material of the rocks here?"

Jiang Xingchen shook his head slightly: "Impossible, we still see traces of rock melting at the entrance of the cave." In the same cave, the difference between the entrance and the inside is not too big. ”

"That's right!" Tang Chuxue couldn't figure it out anymore, and looked down at the ground under his feet.

When his eyes fell to the ground, Tang Chuxue was stunned, and then said loudly: "Xingchen, what do you think this is?" Then he pulled Jiang Xingchen, squatted on the ground, pointed to the ground under his feet and said, "Look, is this a formation?"

Jiang Xingchen was dragged and squatted down, and he still understood what was going on, so he followed Tang Chuxue's finger and saw the formation runes carved on the rocks on the ground.

"It's really a formation!" Jiang Xingchen's right hand slashed the ground, and the formation runes became clear. His palm touched it, and he felt a trace of energy flowing.

After groping along the formation runes with his right hand for a long time, the corners of Jiang Xingchen's mouth were raised, revealing a hint of a smile, and he said softly: "I understand!"

Tang Chuxue immediately asked, "What do you understand?"

"Understand the relationship between this super array and red energy!" Jiang Xingchen stood up with a smile.

Coughing twice, Jiang Xingchen explained to Tang Chuxue: "The super array here should be closed with red energy. This big array is not only outside the cave, but also inside the cave!"

Tang Chuxue interjected: "In this way, the inside and outside of the cave are a complete formation!"

"Hmm!" Jiang Xingchen nodded and continued: "It is precisely because of this formation that the stone walls in the cave are safe and sound...... Not only that, but this formation is also absorbing red energy! When the formation closed the hole just now, I thought that energy was converted from Yuan Qi! But now it seems that this is not the case. I'll just say how can you convert the energy of the closed hole into just absorbing the vitality!"

Tang Chuxue nodded, then shook her head again: "No, if that's the case, why would the red energy still rush out of the hole." Could it be that the formation will still fail intermittently?"

Jiang Xingchen said: "It's not that the formation has failed intermittently, but that after too many years, the consumption of the colorful crystals has caused the formation to weaken, and the energy absorbed is getting less and less...... The red energy slowly accumulates here, more and more, and the high temperature causes high pressure, and finally shoots out from the weak place of the cave entrance!"

Tang Chuxue's eyes lit up, and she smiled, and continued: "Red energy gushed out, the energy in the cave decreased, and the pressure on the formation weakened. At this time, the formation will repair itself and re-seal the red energy!"

Jiang Xingchen said with a smile: "That's right, that's it! Because there is a gap in the formation, when the red energy increases again, it will easily break through from there! But when the energy is weakened, the formation will be repaired again!"

Tang Chuxue said: "It seems that the gap is the mouth of the hole, and the rocks there have been burned!"

"That's it! Since there are no more carved runes, even if the formation is restored, there is still a gap. And this gap will continue to expand, making the formation continue to weaken!" Jiang Xingchen turned his head as he said and glanced at the entrance of the cave.

This is the reason why the red pillar of light appears more and more frequently and lasts longer and longer. Tang Chuxue exhaled and asked the most critical point: "However, where does the red energy come from, and why does it keep gathering." If it has been gathered for thousands of years, the energy is too huge to imagine!"

Jiang Xingchen snorted and said, "This is going to the depths of the cave to find the answer!"

Tang Chuxue dragged Jiang Xingchen and walked forward: "Then let's hurry up, the energy will gather more and more, the temperature will continue to increase, and your pressure will increase more and more!"

Jiang Xingchen grabbed Tang Chuxue hard, squatted down again, and said, "Wait a while, I'll take a look at the formation here first! It seems that this kind of formation has never been seen before, it is brand new!"

Tang Chuxue was silent for a moment, and did not feel any danger, so she nodded in agreement. However, he still urged Jiang Xingchen to hurry up.

Jiang Xingchen didn't say much, he began to observe the runes along the ground, and moved to the stone wall little by little...... This kind of formation is more complicated than all the formations before Jiang Xingchen, densely intertwined with each other, that is, Jiang Xingchen deals with the formation every day, and everyone can be dazzled.

Unconsciously, two hours passed, and Jiang Xingchen only looked at it and didn't remember it completely. And in just these two hours, the concentration of red energy continued to increase, and the cave was filled with a huge amount of energy. With so much energy, the temperature also rose sharply, and the consumption rate of Jiang Xingchen Yuanquan's energy continued to accelerate. (To be continued.) )