Nangong Xun was puzzled, preferring to believe that this black bear was born to be unkillable, unless it wanted to make a decision on its own.

If it can't be killed, what kind of power does it have to make it immortal?

If it wants to die, what kind of force will cause it to crash into the wall and die?

The sky was overcast, and the rain began to fall, and the "tick-tock" sound of knocking on the stone wall was even more clearly audible.

Nangong Xun stood in the rain, surrounded by an indescribable strange atmosphere.

"Brother Xun..."Feng'er called him.

Nangong Xun glanced back at her, and the confusion in his eyes lingered.

Feng'er whispered, "I saw it all just now... Let's hurry up..."

Feng'er tried her best to calm her mind, but Nangong Xun clearly heard the uncontrollable tremor in her words.

Maybe it was cold rain, but he believed that she was afraid.

Nangong Xun's heart is not like this?

"Huh, what kind of pattern is that?" Feng'er suddenly exclaimed, pointing to the stone wall.

Nangong Xun looked in the direction of her finger, and directly above the black bear hitting the wall, there was a vague wedge-shaped pattern, which looked more like a regular depression that had been hollowed out with a knife when touched by her hand.

This pattern seems familiar, and Nangong Xun can't remember where he has seen it for a while.

Suddenly, Feng Er said happily: "Could it be the piece of dark iron that Senior Ling was dying of?"

Nangong Xun suddenly realized, and hurriedly reached out to take out the sharpened iron from his arms, which was wedged tightly compared to the depression on the stone wall!

Feng'er was overjoyed and didn't know what it was, seeing that he was still hesitating, he was in a hurry, but he snatched it up, and pressed the dark iron into the depression with a "snap"!

"Feng'er!" As soon as Nangong Xun's voice fell, he only heard a dull sound of "squeak", and the stone wall automatically parted to both sides, revealing a big black hole!

Bottomless!

Feng'er's eyes widened in shock, and she said in a trembling voice: "This... What the hell is this..."

Nangong Xun did not answer.

Suddenly, a cold wind swept through the cave, causing the two of them to hunt and hunt, and they couldn't open their eyes!

The two of them couldn't help but shudder at the same time!

This gust of wind was so cold that it was cold to the bone marrow, Feng'er shivered again, glanced at Nangong Xun and said in shock: "Should... Could it be that there are ghosts living in it? Are we going to release them?"

Nangong Xun drew his sword and said: "What kind of evil ghost meat dumplings have you never seen when you touch Captain Jin? With me here, Feng'er is not afraid!"

Just then, a gust of wind passed by, and everything was back to normal.

The black entrance of the cave was like a monster opening its mouth, waiting for every uninvited guest.

Nangong Xun said that he lit a torch and was about to enter the cave, Feng'er pulled his shirt from the back door, and said timidly: "Brother Xun, do you really want to go in?"

Nangong Xun nodded, and said firmly: "Master and old man have spent several years of hard work to finally find the general location of the emperor's tomb, and I will not be willing to go in to find out! Feng'er, you are waiting for me here, I will go in and take a look..."

Feng'er grabbed his clothes and still didn't let go, looking at the sky getting darker and darker, and the mountains and dense forests in the distance looked particularly hideous and terrifying in the night, she couldn't help but be afraid, so she had to say: "Brother Xun, I'm afraid alone... I'm going to be with you..."

Nangong came over and hugged her, and said with a smile: "If the wild boar and black bear come out again later, you will stay away!"

Feng'er nodded, looking extremely resolute.

Nangong Xun held the torch and took her hand and walked cautiously towards the depths of the cave step by step.