Bai Yan gazed at the river of time before him, his initial excitement gradually calming down.

The so-called time double refers to Bai Yan's ability to summon his past or future self from the river of time to assist him in battle.

It might sound a bit convoluted, but in reality, this ability is incredibly powerful.

Just one Bai Yan is enough to give his enemies a headache. If Bai Yan were to summon himself from one day prior, with equally formidable strength and a shared consciousness, his enemies would likely be driven to despair.

However, as the past self of Bai Yan that had just been summoned stated, this powerful ability cannot be used frequently.

When Bai Yan summons his past self, during that period the corresponding past Bai Yan does not exist.

For example, if Bai Yan summons himself from between seven and eight o'clock the day before and fights for an hour, during that time frame a day ago, Bai Yan does not exist in the world.

In the short term, it's not a problem, but if it persists for too long, the world may notice Bai Yan's absence.

This would lead to a collapse in the timeline, ultimately resulting in Bai Yan truly vanishing from the world, with no one remembering that a person like Bai Yan ever existed.

Even more terrifying is if past Bai Yan, after being summoned by present Bai Yan, were to be killed in action.

Would the current Bai Yan die due to the timeline collapse, or would he need to return to the past to take the place of his past self and relive that period of time?

Bai Yan doesn't know, nor does he dare to try. Fortunately, as long as the present Bai Yan still has consciousness, he can instantly send the past Bai Yan back to the past.

If Bai Yan summons a version of himself that has already learned the time double ability, then the summoned self can also return to the river of time by itself.

However, summoning still requires the current Bai Yan to call forth, otherwise it becomes time travel instead of time doubling.

Overall, the emergence of this ability greatly aids Bai Yan, for example, when An Yan and An Xiaowan both need his company at the same time, Bai Yan can summon a past self to attend to both sides without neglecting either.

Thinking of this, Bai Yan even felt a bit excited.

And the application of this ability isn't limited to that. If Bai Yan's strength becomes strong enough to summon his future self, it would essentially allow him to foresee the future in a roundabout way.

And the future self would surely know when he would choose himself, and would pre-arrange things around him, avoiding irreparable consequences.

Recalling the side effect of stiffness throughout the body when the Father God retrieved his three thousand doubles, Bai Yan smiled inwardly. This is a legacy belonging to him, not everyone can use it.

Therefore, Bai Yan set a rule for himself.

Before he can summon his future self, if he must summon his past self, he should choose a version of himself from a free time, since he knows when his past self was busy and when he was free.

Also, each summoning must occur when Bai Yan is alone, and the summoning duration must not exceed thirty seconds.

Because Bai Yan has many versions of himself to choose from, such as himself right before falling asleep at night, which is always a good target for summoning.

Bai Yan also reminded himself to always pay attention to the summoned self's condition, and if any situation arises that might lead to his death, immediately send him back to the past.

This is the correct way to use the time double legacy ability, and it is the rule set by Bai Yan for his own safety.

After doing all this, Bai Yan finally breathed a sigh of relief and stepped away from the river of time.

From this day forward, another river of time flowed in Bai Yan's mind, and with a single thought, he could summon his past self to assist in battle.

With Bai Yan's current strength, he could not summon many of himself at once, but he could summon more than ten.

Imagine ten Bai Yans appearing simultaneously before the enemy, with virtually identical power. It's utterly absurd and overwhelmingly dominant.

Acquiring the time double ability has given Bai Yan another trump card, and it's one that can continuously grow stronger.

This brought Bai Yan a certain sense of relief.

After all, though the Divine Kingdom has been conquered by him, there lies the vast Endless Star Sea ahead of him in the future.

And what kind of existence lurks within the Endless Star Sea remains a mystery to him now.

Possessing the time double ability means he has one more life-saving capability. Even if faced with an unbeatable enemy, he could have his future self summon his defenseless current self away, thus avoiding a fatal strike.

The time double ability should be highly developable, and Bai Yan will likely think of more ways to use this ability in the future.

But for now, this ability is already incredibly powerful, even more so than the instant teleportation and the ability to control the flow of time around him that he acquired previously.

It's just that it cannot be used frequently.

Composing himself, Bai Yan walked out of the cathedral and saw Athena standing solemnly at the entrance.

"It's alright now, no need to be so tense."

Bai Yan said with a smile to Athena, then prepared to take her to find Satan.

The matters of the Divine Kingdom have been temporarily concluded, and Bai Yan was confident enough to entrust the following tasks to Satan.

Although the Divine Kingdom was shattered by Bai Yan earlier, and though it has been restored, it is not quite the same as it was. So Bai Yan, planning to use it as his secret base, needed to discuss with Satan how to rebuild the Divine Kingdom.

"Master, where are we headed next?" Athena followed closely behind Bai Yan, almost like a shadow.

This was her small thought which Bai Yan saw through but didn't point out, allowing her to stay by his side. After all, beautiful women are always pleasing to the eye.

"To find Satan, there are still some things to instruct him on." Bai Yan said with a smiling stride, and in a matter of moments, he had crossed thousands of kilometers.

After acquiring the new legacy, his previous abilities had also been enhanced.

The frequency of instant teleportation increased, and its range broadened; the multiplier for controlling time flow increased, and the range expanded as well.

At this moment, Bai Yan moved as if the ground was shrinking beneath him, but in reality, he was merely adjusting the flow of time around him.

While it took others one step, he had already taken ten or even a hundred steps, naturally making him faster than others.

However, using these abilities was still somewhat strenuous for the current Bai Yan, requiring a large amount of energy to support their use.

But the future looks promising, doesn't it?