After an unknown amount of time, a high-pitched cry suddenly came from Leng Xuan's ear. The sound went from far to near, high and low, like a fierce beast roaring and roaring, awe-inspiring, echoing in the valley for a long time. Leng Xuan opened his eyes, stood up, and looked up in the direction from which the voice came. I saw that in the deep mountains in the distance, the clouds were extremely thick, and in the dark clouds, there were also flashes of electric light. All of this is in line with what the old man said.

  Leng Xuan frowned secretly, even if he was able to trigger a vision of heaven and earth, even if it wasn't the remains of a blue dragon, it was definitely not an ordinary thing. He put on his backpack, then tapped his toes on the ground, and his figure rose into the air, galloping away in the direction where the electric light gathered. After about half an hour, Leng Xuan flew more than 100 kilometers in the mountains, and the roar became louder and louder. After a while, Leng Xuanfei landed on the top of a mountain peak, and then raised his eyes to look down. I saw a deep valley not far away, surrounded by mountains, up to 100 meters deep. In that deep valley, the fog was thick, covering everything at the bottom of the valley. And that roar came from the bottom of the valley. Leng Xuan raised his head and found that the thundercloud above his head began to dissipate gradually, and the cry at the bottom of the valley gradually weakened. After pondering for a moment, Leng Xuan turned his body and jumped straight into the deep valley.

   After descending about fifty meters in the deep valley, Leng Xuan felt that the surrounding air had become humid, and it also had a strong fishy smell, which made people nauseous. He held his breath, his figure flipped in mid-air, and instantly stopped the tendency to fall, and urged his True Qi to stick tightly to the mountain wall with a suction tactic.

   At this time, through the thin mist, everything at the bottom of the valley was clearly visible. I saw flowers and plants flourishing at the bottom of the valley, and there are many unknown plants growing in it. In the center of the valley, there is a cold pool with a diameter of about ten feet. The water in the cold pool is extremely turbid, and there are traces of cold air rising from it. At this moment, in the center of the cold pond, there is a huge whirlpool, spinning extremely fast. After a while, I saw that the whirlpool gradually shrank, and then returned to peace with the pool surface.

   Just when Leng Xuan was in doubt about all this, he suddenly saw two men in black walking out of the green forest next to them. They stood by the cold pool, gesturing for a while, and then returned to the green forest. Leng Xuan was secretly shocked that there was someone at the bottom of the valley. There are nine out of ten people who appear in this kind of place, and they don't know what the other party is. He stuck to the mountain wall, observed it secretly for a while, and then moved slowly towards the bottom of the deep valley. Not long after, he reached the bottom of the valley. This deep valley is not big or small, it is about the size of three football fields. Except for a cold pool in the middle, the rest is covered by green forests. With these plants as a cover, Leng Xuan was not afraid of being discovered. He determined the location of the two men in black just now, and walked over lightly.

   Ten minutes later, Leng Xuan finally heard a faint voice in his ears. He quickly lowered his body, slowed down his pace, and approached the other side silently. After a while, he came to a sturdy old tree, the cat hid behind, and then cast his eyes. I saw a flat land not far away, and there were still many tree stumps left on the ground. Obviously, the flat land was cut down by humans. On the flat ground, several spacious tents were also set up.