Yun Shou's Return to Truth or Simulator is based on the present, allowing time to flow forward rapidly, experiencing all sorts of things along the way, and then bringing back all the results.

He Yuan is different.

His ability is to go back to the time when he was just born and then start growing from scratch.

For example, at that time he was a strong man with the strength of ten thousand jin, and he had just turned 18.

So, when he activates "Old Days Simulation", he will return to the state of an infant, an infant who was born without any abnormalities.

If he does nothing, the baby will gradually grow stronger as he grows.

He naturally possessed the strength of two thousand jin at the age of five, four thousand jin at the age of ten, and ten thousand jin at the age of eighteen, which was also exactly the age when he began his "old simulation".

The simulation ended, and he gained nothing.

However, if he starts exercising from infancy during the old simulation, he will gain both "strength gained through exercise" and "strength that naturally recovers over time".

At five years old, he had 2,100 jin of strength; at ten, 4,500 jin; and at eighteen, 12,000 jin.

The simulation ended when I turned eighteen. The gain from this past simulation was the two thousand pounds of strength I gained through hard work while reliving my life.

Even if one dies suddenly at the age of five, one can still gain the extra 100 pounds of strength that one gained at that time.

The "strength" mentioned above can be equivalently replaced by cultivation level, alchemy level, and other related terms.

Yun Shou's future simulations continue until his death or the end of his life.

He Yuan's "Old Days Simulation" can only progress from zero to his current age.

The younger you are, the more you will suffer.

This is also why it took him decades to become a true immortal... After all, each simulation only lasted for a dozen years, until later it gradually increased to twenty or thirty years.

Furthermore, although it is called "Old Days Simulation", the abilities that He Yuan's past authority granted him are not actually manifested in the form of a simulator.

It's a dream.

In his dreams every day, he returns to his infancy, growing from nothing to the present day.

After his realm was elevated, the strongest of the old abilities he acquired was only "returning to ten years ago," which could only be used once every ten years.

But this is merely a leap in time, not "creating a boundless void from ten years ago".

The others all involve returning someone to their state from several years ago, indirectly extending their lifespan, or restoring the waste of rare and precious materials to their state from a year ago, and so on.

He truly never expected that... the future Dao Lord would be able to pry out such a heaven-defying skill as "Return to Truth" from his authority.

"...Your abilities are different from what I expected. If what you say is true, then I really dare not."

He Yuan lowered his head and spoke with some regret.

Yun Shou stared into the eyes of the man in blue: "So, why did you stop me in the past? Brother He, if you let me pass through this path, I will repay you in the future."

"I actually have a pretty good impression of you. Those monopolists in the Origin Universe blocked my way, and I, like you, really dislike them, especially that old man from Fate, who has chased me down countless times."

Yun Shou subconsciously ignored Balala.

He Yuan sighed: "Because I'm afraid."

How can I be sure what kind of person you are?

"If you were to use your authority from that time to forcibly encompass my ancient Boundless Sea... not only would my place of refuge be destroyed, but even my power to resist would be wiped out!"

"I don't want to entrust my life to your hands."

"I don't want to gamble on your mercy."

"So even if I cannot seize control of your future, I must ensure my own absolute safety, and I must prevent you from replicating those old principles."

"Is this the hundredth or the thousandth time you've communicated with me in the future?"

He Yuan said seriously, "I don't know what I said in the previous future, but you should have already judged my character from it."

"Now, I can make you a promise: you will tell what you just said to me in reality, so that I will know that your future power is inviolable."

“I will not take power from you. I can grant you access to your old privileges, allowing you to travel freely through endless time and space.”

"However, I will forbid you from replicating the ancient Dao principles and from becoming a Dao Lord. Apart from that, I will not cause you even the slightest harm or obstruction!"

"In this way, you and I can live in peace, and no one will be harmed."

Yun Shou: "...But wouldn't that mean my life is in your hands, gambling with your mercy?"

He Yuan: "..."

He frowned, feeling that you didn't seem to understand the master-servant relationship.

He is the one who truly holds the dominant position and truly controls everything!

As long as the future quasi-Dao Lord is in this ancient boundless sea, he will never be able to escape his grasp. Even if Yun Shou manages to escape in the future... he will still close the replication authority of those Dao principles!

He Yuan was about to say something more when he saw the future Dao Master in front of him shake his head.

Yun Shou said, "Actually, this is not a big problem. As long as you don't care about my actions, don't interfere with my life, and bring back the people I value and cherish from the past, I won't mind having an emperor emeritus who doesn't care about anything."

He Yuan smiled and asked, "What conditions do you have left?"

He knew Yun Shou had other requests, but it didn't matter; he would agree to anything he could do.

He felt that this was a possibility, and that He Yuanzhen was not an evil villain.

Even though the future Dao Lord has no chance of turning things around given the current situation, he still wants the future Dao Lord to willingly accept his arrangements and make promises.

This can be seen as a sign of respect for fellow Dao Lords, and also as a reflection of his true nature.

Yun Shou said quietly, "You can't do it."

"Because I want to rescue people, not just people from the past, but also people who have already disappeared or died in the future."

"Someone must hold the reins of power in the future to bring them back from those years."

"But you cannot seize my future authority; you will not allow the birth of the future Dao Lord."

"Therefore, I cannot agree to all the superior conditions you have offered."

"You can only give me fish, not bear's paw.

"But I want both fish and bear's paw!"

He Yuan remained silent: "But you won't succeed."

Yun Shou smiled.

He ended that future.

He originally wanted to mention that he possessed another inalienable essential authority, but there was no need; He Yuan didn't trust him.

Then he has no choice but to retrieve it himself.

"Fifteen, it's all up to you."

In 25 seconds, the old day will arrive in front of him; this will be Yun Shou's last simulation.

"Simulation - Start!"