Chen Xuan worked hard and used all his strength to run forward. Although he was running, he could only see that Chen Xuan's movements were extremely clumsy. After more than half an hour, Chen Xuan ran to the middle of the secret hall.

On top of the cold crystal stone.

Arriving in front of this cold crystal stone, Chen Xuan's sweat gradually dripped to the ground.

This cold crystal stone looked extremely plain, just like an ordinary cold crystal stone, but Chen Xuan knew that this cold crystal stone was by no means ordinary.

At this moment, Chen Xuan stretched out his palm and drilled the cold crystal stone into his hand. When the cold crystal stone touched Chen Xuan's skin, a silvery white light suddenly appeared, and then the black cold crystal stone

It actually began to shed its skin slowly, and a silver-white crystal core broke out from it.

When the silver-white crystal core broke free, light burst out suddenly, making Chen Xuan couldn't help but close his eyes.

When he opened his eyes again, the white crystal core was turning into a stream of light, slowly entering his body.

Chen Xuan immediately sat cross-legged, feeling the mysterious energy nourishing his bones. At the same time, Chen Xuan also felt a huge memory suddenly appear in his memory.

There are also some exercises inherited from ancient times in his memory, and there are also a lot of insights into practice. Among them, what attracts Chen Xuan is a kind of physical training method.

This kind of body-refining technique can strengthen the physical body of the practitioner. It is precisely because of the golden mysterious energy that Chen Xuan now clearly feels that the aura on his body is completely different from before.

After several hours, Chen Xuan slowly opened his eyes and found that he was holding a silver-white pebble crystal-like cold crystal stone in his palm.

Afterwards, Chen Xuan left the secret hall.

"Boy! Hand over that cold crystal stone to me quickly."

The hoarse voice of the man in black robe reached Chen Xuan's ears.

"I did get the cold crystal stone, but I won't give it to you."
Chapter completed!