The footsteps of the three people were extremely clear in this empty environment. Originally, Xia Qinglan would still look for topics among the three of them, but slowly Xia Qinglan also noticed something unusual.
It is really too quiet here. Even if you usually go to some underground spaces, it will not be as quiet as here. Except for their footsteps, there is no sound of any living creatures.
Finally, when both Xia Qinglan and Lin Feng couldn't bear it anymore, new changes appeared ahead.
They reached the end of this direction, and a smooth and flat stone wall appeared in front of them.
"What kind of place is this? We have actually reached the end of the cave."
"Did we choose the wrong direction?"
Lin Feng and Xia Qinglan looked at each other, their eyes full of doubts. They still didn't know what was hidden in this underground space.
"Let's explore along the stone wall. Maybe we can find the exit. Maybe there will be some special clues." Lin Feng said while looking at the stone wall.
Xia Qinglan and Yan Nanshan nodded, and the three of them began to explore along the stone wall. There was indeed nothing special about the stone wall. Lin Feng reached out and touched it, and the feeling told him that the stone wall was very hard.
"What the hell is this mountain? It's so hard!"
Lin Feng touched the stone wall and walked at the front, feeling a little shocked in his heart.
Xia Qinglan was also behind Lin Feng. His eyes were also looking at the extremely solid stone wall in front of her. She was also shocked that there was such a powerful stone in this underground space.
This stone not only has extremely high defense, but its toughness is also shocking.
"When was this stone wall built?"
"I don't know about this either. It's really strange here. Let's find a place to take a rest first!" Lin Feng said.
Xia Qinglan looked up, and saw a lot of caves in the faint light. However, these caves had collapsed, and only a small area was still intact, and there were also a lot of gravels.
Lin Feng also discovered the existence of these caves. At this time, there were gray ghosts outside. If they could find a cave to rest, the danger would be much reduced.
After searching for a while, they found a relatively hidden cave. This cave was relatively flat and had many rock walls inside. The rock walls were covered with moss and some dead plants.
"This is a nice place to rest."
Xia Qinglan looked inside the cave, nodded and said.
Yan Nanshan also took a look at the scene inside the cave and said: "Lin Feng, this cave is not very deep. If you put down the Lingshuang Sword outside the cave, you should be able to protect the cave from the gray ghost inside that will suddenly attack you.
"
"Okay, I understand this. I'm going to arrange the protective shield first so that I can guard outside." Lin Feng responded with a smile. His spiritual energy circulated, and the Lingshuang Sword shot out from his hand and pierced the ground at the entrance of the cave.
superior.
After warning, Lin Feng was surprised to find that the sharpness of the Lingshuang Sword could only penetrate three inches into the ground. Although he did not use Qi this time, the rock's strength was far beyond imagination.
A faint light illuminated the surroundings. The light was reassuring, like a huge protective shield surrounding the cave. After doing this, Lin Feng and the others began to clean the inside of the cave.
Lin Feng was very fast, and it only took him a quarter of an hour to get the dust out of the cave.
Lin Feng sat cross-legged at the entrance of the cave and said: "It has been some time since we entered the ruins. Let the three of us keep vigil for a period of time, each for two hours, and then explore again after resting."
Yan Nanshan and Xia Qinglan nodded, agreeing with Lin Feng's opinion.
Then the two of them sat down cross-legged in the cave and began to practice and recover.
Lin Feng was sitting next to Lingshuangjian, looking deeply into the darkness ahead, as if thinking about something.
Only the occasional frown will let people know that this young man has some secrets hidden in his heart.
Just looking at the darkness like this, I don't know how long it has passed. Lin Feng even felt a little numb. Staring at the darkness for too long can easily make people more tired.
Suddenly, a red light flashed past in the distance. Lin Feng's mind tensed up and he stared intently, but found that the darkness ahead had not changed at all.
"Did I see it wrong?"
Lin Feng murmured to himself and turned back to look at the two people who were practicing in the cave. At this time, Xia Qinglan retreated from the state of practice.
Looking at Lin Feng's gaze, his face turned slightly red unnaturally, but the light in the cave was too dim, so Lin Feng didn't notice it.
Xia Qinglan stood up and knelt down next to Lin Feng.
Xia Qinglan held up her scattered hair with her fair hands, and looked at Lin Feng with bright eyes like stars.
"Lin Feng, I'm almost recovered, you go and rest."
A scent of fragrance spread to the tip of Lin Feng's nose, making him twitch unconsciously. It smelled quite good.
Lin Feng did not refuse: "Okay, if anything happens, call me in time."
"Well, you go ahead."
"I'm going to practice first, please pay attention."
Lin Feng said something and then came to the middle of the cave and sat down, crossed his legs and began to enter the cycle of heaven and earth.
As time passed by, Lin Feng slowly fell into trance.
The killing sword energy in his body began to circulate continuously. Lin Feng felt the power growing bit by bit and couldn't help but smile.
Although each practice does not bring about a very significant improvement, it can make his strength continuously improve. It seems that this killing sword spirit is indeed the most domineering killing spirit in the world.
As time passed, Lin Feng felt that his killing sword energy was getting stronger and stronger.
There is no concept of time in cultivation. Time is like a consumable here, constantly being consumed, making people unaware of the passage of time.
Lin Feng, who was practicing, suddenly noticed someone approaching him. He opened his eyes suddenly and saw a trace of anxiety on Xia Qinglan's face.
"Lin Feng, wake up quickly, there are changes outside!"
Xia Qinglan looked at Lin Feng and shouted.
After hearing Xia Qinglan's words, Lin Feng quickly stood up and went outside the cave to check the situation outside.
The originally dark environment outside suddenly began to glow with a faint red light.
The light was not bright, but it was able to illuminate the surrounding scenery, allowing Lin Feng and the others to clearly see the outside world.
It was a wide cave, and above the cave was a sky-like arc. Under the faint red light, one could vaguely see the intricate patterns and strange patterns carved on it.
At this time, the lines on the pattern were shining with dark golden light, rising and falling together like breathing.