"Those unwilling to contribute may leave now..."
Zhu Kun's gaze was fixed on Gu Yuan as well, seemingly waiting for him to make a decision.
At that moment, Gu Yuan found himself in a difficult position. If he left, then the Ancient Emperor's Cave Mansion might truly be breached afterward.
If he did not leave, then he would have to join forces with the mysterious man and Gu Yuan to break open the Cave Mansion's gate.
If he neither wished to cooperate nor wanted to leave, then the mysterious man and Soul Heavenly Emperor would likely strike at once. With two late-stage Nine-Star Dou Saints joining forces, Gu Yuan had no confidence in victory whatsoever. What was more, Nihility Devouring Flame and the others would soon arrive...
"Have you not decided yet?"
Soul Heavenly Emperor urged him impatiently.
"Then we'll cooperate..."
Under Soul Heavenly Emperor's urging, Gu Yuan finally made his decision. He felt that if he withdrew from this space, then whatever happened inside afterward would be completely unknown to the Alliance of Four Clans. But if they remained, then even if the Ancient Emperor's Cave Mansion was opened, he, Lei Ying, Yan Jin, and the others would still have some chance of seizing the treasures within.
"Hahaha, good!"
Hearing Gu Yuan's words, Soul Heavenly Emperor immediately burst into laughter. He had awaited this day for who knew how long, and at last, it had come.
"Soul Heavenly Emperor!"
"Clan Leader!"
"Clan Leader!"
In the next moment, many figures suddenly appeared within this space. They were the experts from both sides who had chased after Soul Heavenly Emperor and Gu Yuan.
On the Soul Clan's side, aside from Nihility Devouring Flame, there were two Eight-Star Dou Sheng elders such as Hun Shengtian, as well as two Seven-Star Dou Shengs.