Through that massive door, a resplendent and towering palace could vaguely be seen, situated amidst the endless yellow sand.
Donghuang Taiyi did not hesitate and directly entered the door.
Then, that door instantly vanished from sight.
Upon seeing this, Yu Yuan's eyes lit up.
He knew that Donghuang Taiyi must indeed be looking for Emperor Jun of the Demon Clan.
The majestic palace he had just glimpsed through the gate must be the Demon Emperor Hall!
With this in mind, he no longer needed to stealthily follow Donghuang Taiyi.
He could now boldly charge in and have a proper talk with those two emperors of the Demon Clan.
With these thoughts, Yu Yuan rushed toward the rock.
Even though the door had disappeared and he did not know the correct runes, it could not stump him.
He used the Time Reversal Technique directly, causing the vanished door to reappear.
Such a trick was not difficult for someone like him who had mastered the Time Dao Law.