Adding the time it took to activate the sword formation, another two seconds were wasted.

In other words, Ling Yan only has five seconds left.

Sixth second! The entire world began to tremble!

Endless blood and energy spread from heaven and earth!

Seventh second!

Ten huge cracks appeared between heaven and earth.

In the eighth second, ten Hell Gods walked out of the crack proudly with their hands behind their backs.

At the ninth second, ten blasts of destructive evil-killing sword energy similarly descended upon them! All the Hell God Emperors, before they could react, were instantly obliterated by this sudden onslaught of sword energy.

Ten seconds later, peace had completely returned to the world!

[Ding... Congratulations, you've successfully completed the Level 4 Authority Challenge! You've successfully obtained the Hell God Emperor Secret Realm, Level 4 Authority!]

At this moment, a prompt sound also reached Ling Yan's mind.

Hearing this, Ling Yan breathed a sigh of relief. He didn't expect that even with the use of the Evil-Slaying Sword Formation, he almost failed.

I don’t know if this challenge can only be done once or many times. If it is only done once, this Hell God Emperor copy will be useless!

Fortunately, all the efforts were not in vain!

"With this permission, my passive level-up speed has finally taken off!"

Thinking of this, Ling Yan couldn't help but feel happy.

He wanted to upgrade 2999 elements at the same time, so that would naturally take a lot of time.

Even if he jumped 300 levels to clear a secret realm, Ling Yan could only raise his passive level to LV385 at most!

It takes 1,000 times to reach level 400!