Xiao Xuan nodded slightly, "they collect tuoshe jade for the purpose of opening the cave of tuoshe jade. It seems that the soul God has found a way to promote him."

"What?" Everyone frowned.

Xiao Xuan's face was cold. "In those days, I was anxious to break through the fight against the emperor. It was just because the spirit clan heard that the spirit heaven emperor also wanted to break through the fight against the emperor. I wanted to go ahead of them, but

Then we both failed. "

"Did they all fail with the strength of their ancestors? How difficult is the road to fight the emperor? " Xiao Yan murmured.

Gao fan lay on Xiao Yu's thigh and opened his eyes slightly. "It's hard because there is something missing in the world."

"What's missing?" The crowd looked at Gao fan, puzzled.

Xiao Xuanwei narrowed his eyes and was surprised.

"Don't you think so?" Gao fan looks at Xiao Xuan.

"Indeed Xiao Xuan said faintly,

"I also found that I have reached the peak of fighting spirit and soul, and I can't improve a little more,

If I change to another realm, I will definitely upgrade,

but I don't know why I can't break through the peak of fighting spirit."

"Over the years, I've been pondering over what's missing in the tomb of heaven. I can't understand it all the time..."

"The world is short of gas." Gao Fan said lightly.

"What is source gas?" People were very surprised.

"Have you ever thought about how the world was born?" Gao fan asked lightly.

People shake their heads one after another. No one really thinks about how a world can be born.

Gao fan, with a proud face, began to crush people with the knowledge he learned in the system, "a world is like a person, it will also be born and die."

"You can understand source gas as the source of life in the world.

as long as source gas is used, the world will continue to grow,

but without source gas, the world will slowly die."

"You mean the world we live in is dying?" Xiao Xuan murmured.

"Of course." Gao fan raised his eyebrows and said, "but the life span of the world is too long compared with that of living things. It may take hundreds of millions of years to die.

but one thing is certain that the world's source gas has been consumed."

"The source gas has been used up?" Xiao Yan frowned slightly.

"Yes Gao fan had no choice but to shake his head, "every Doudi has to absorb some source gas when he achieves the throne.

those Doudi leave the world and do not come back after they achieve their status.

as time goes by, the source gas will be gone, and the world will die slowly."

"Yes Xiao Xuan raised his head and his eyes became deep. "There were so many fighting emperors in ancient times, but now none of them can be found,

only some remains are left in this world, and even the bones are not left.

it is very likely that, as you say, they have left this world."

Immediately, Xiao Xuan looked at Gao fan,

"but how do you know that?"

Everyone was silent and looked at Gao fan.

"Er..." Gao fan was a little embarrassed. He knew not to say so much.

Doesn't sleep well? Do you have to get involved in this?

"Cough, I have nothing to do. I figured it out myself!" Gao fan smiles.

People look contemptuous, who especially believe!

"Well, it shouldn't be too late. Let's exchange your blood now!" Xiao Xuan had no choice but to shake his head. With a wave of his big hand, he squeezed out a seal and entered the pool.