The entrance to the cave hidden on the cliff wall does not look big, but it is unexpectedly deep, along the narrow cave passage all the way to the depths, the originally spacious cave is getting narrower and narrower, winding and not knowing where it leads, the entrance of the cave can barely see the surroundings with the help of the light outside the waterfall, but the deeper you go, the weaker the light.

Yan Jie didn't dare to be careless, this medicine valley looked unusual everywhere, the precious medicinal materials that could be seen everywhere, all kinds of strange beasts that were so strong that they were exaggerated, and the guardian formation at the level of the Tribulation Realm, the subtleties were even praised by Long Lao, it can be seen that the founder of this medicine valley was absolutely amazing in his time. Famous characters, why did such a great power leave this medicine valley alone, and what kind of changes did he encounter outside, he has not returned for ten thousand years, these are all mysteries, the previous crises such as the Lotus King and the cannibal willow tree have almost made Yan Jie fall on the spot, so in this medicine valley, you can't judge the situation you face with common sense, maybe an ordinary stone hides a huge crisis.

The easiest thing along the way is Xiaopi, the little monkey squatting on Yan Jie's shoulder didn't take long to endure the loneliness, in order to get rid of the boring hurry, the little monkey jumped directly from Yan Jie and began to jump up and down in this cave passage, and from time to time he also broke off a shiny stone from the rock wall, and stuffed it into Yan Jie's pocket like a baby.

In the end, Yan Jie couldn't stand being entangled by this leather monkey, and grabbed the back of his neck several times and reprimanded him fiercely, but every time he saw Xiaopi's tearful appearance, he could only put it down with tears and laughter.

As he went deeper and deeper into the interior of the mountain, Yan Jie suddenly found that the cave, which was so narrow that it could only be passed through by one person, began to become spacious, and the direction of the cave also began to climb all the way down, and finally tended to be horizontal.

After about a stick of incense, the abnormality in front of him attracted Yan Jie's attention.

"Hey, this stone wall is so smooth, as if it had been cut with a sharp blade. Yan Jie carefully inspected the cave wall around him, from just now this cave began to show traces of artificial excavation, at first Yan Jie thought it was some kind of natural coincidence, but the smoother stone wall made Yan Jie sure that this cave hidden behind the waterfall was definitely not a natural formation, but artificially excavated.

"There is extremely hard granite everywhere, and it is difficult for ordinary tools to even leave scratches on this stone wall, and it takes a lot of manpower and material resources to dig such a deep cave in the mountain, or extremely strong strength. Yan Jie's heart was full of speculation about the cave diggers, and he was also full of curiosity about what was hidden in the depths of the cave.

After walking a distance of about a few hundred meters, the cave that had been pitch black suddenly became brighter, and the stone passages on both sides were covered with milky white spars, exuding a soft light, Yan Jie, who had returned to normal sight, hurriedly looked around, and a huge stone gate appeared in front of Yan Jie's eyes, the stone gate was five meters high, and the whole body was made of white jade marble, and it still maintained its white appearance after tens of thousands of years.

"It seems that this is a secret room, I don't know who did it, could it be that this is the residence of the founder of the Medicine Valley, the powerful power of formation and alchemy? But Yan Jie carefully inspected the stone door and found no mechanism to open it.

At this time, Xiao Pi changed his previous life, and looked unusually quiet, squatting beside Yan Jie and staring at the white jade-colored stone door, as if recalling something, a pair of dark golden eyes kept flashing with light.

Yan Jie kept trying various methods to open this stone door, but whether it was brute force destruction or skill dismantling, there was nothing that could be done about this stone door, Yan Jie investigated every inch of the surroundings, and there were not many mechanisms in it, which made Yan Jie difficult.

"Little Pi, it looks like we're going back the way we came, try to see if there's a way to get out through the waterfall. Yan Jie couldn't find a way to open the stone door after fiddling for a long time, so he could only say to Xiaopi helplessly.

"Ahh

"Boom, boom" Yan Jie just wanted to ask what Xiaopi was doing, but before he could say anything, he was stuffed back by a sudden roar.

The indestructible stone door, which could not move at all no matter what method was used, slowly opened in Yan Jie's stunned expression.

Xiaopi turned around and beckoned to Yan Jie, and then ran into the stone gate.

"Damn, Xiaopi, can you, is this a hanging?" Yan Jie finally recovered from the shock and hurriedly followed Xiaopi in.

Behind the door is a small stone room, there is no furnishings in the room, only a stone table is placed in the center of the room, and the top is still the glowing spar outside the stone door, and the warm white light is sprinkled all over the stone room, giving people a warm feeling.

Yan Jie looked around the entire stone room and found Xiao Pi squatting in front of the stone wall on the east side, quietly looking at something.

"Xiaopi, what's wrong, what's on this wall?" Yan Jie asked as he walked to the wall.

"Oh my God, what is this?" Yan Jie, who approached the stone wall, was immediately startled again, and the entire wall was densely packed with text from top to bottom.

"Is this an ancient barbarian language?" After Yan Jie crossed over, he found that he automatically learned various languages in another world, and what he said in his mouth was still Chinese, but listening to it in other people's ears was the corresponding language, and the words spoken by others sounded pure Mandarin in Yan Jie's ears, and the same was true for words, which saved Yan Jie a lot of things, in fact, after crossing Yan Jie felt a lot of changes in his body, the first thing was the change in physical strength, although Yan Jie had a martial arts foundation in the original world, but years of decadent life had hollowed out Yan Jie's body, so many times he had more than enough heart and insufficient strength, which was also the reason why Yan Jie was knocked down by three hooligans, but after crossing, Yan Jie obviously felt that many skills that could not be used before could be used naturally, and the strength of mental power also allowed Yan Jie to have better coordination and control of the body, which also allowed Yan Jie to get started faster in the cultivation place.

Yan Jie began to read this text carefully, originally intended to find the secret of the stone chamber, but soon Yan Jie was attracted by the content of this text.

The stone wall tells a story, or a legend to be precise.