The Old Rhinoceros's plea for mercy stirred Wang Daoyuan's interest.
Though this fellow was no longer as strong as him, he was still a genuine Immortal Lord.
Moreover, he had been active in the Immortal Realm for several million years and was practically among the earliest batch of living beings there.
If he could obtain his service, ruling the Immortal Realm in the future would become much easier.
With his current potential, even if he killed the Old Rhinoceros and seized his origin, his strength would not improve much in the short term.
Calamity-Conquering Formation Immortal had contributed considerably to this trip to the Immortal Realm.
If he killed the Old Rhinoceros, he would have to share some of that origin with him. He would very likely use the opportunity to break through to the Immortal Lord realm.
Calamity-Conquering Formation Immortal's methods were already unfathomable, and he was deeply calculating.
If he were allowed to break through to the Immortal Lord realm, he would likely become impossible to control in the future.
If he kept the Old Rhinoceros instead, he was also knowledgeable and extremely familiar with the Immortal Realm.
The Old Rhinoceros could basically do everything Calamity-Conquering Formation Immortal could do.
That would cut Calamity-Conquering Formation Immortal's importance in half.
With the two competing against each other, he, their lord, could rest easy on a high pillow.
Seeing Wang Daoyuan lost in thought, the Old Rhinoceros gathered all his strength and said, "My lord, the situation in the Immortal Realm is tangled and complicated.
"If you kill me, you will surely draw the vigilance of the other eight Immortal Lords and the Heavenly Demon.
"If they join forces, you will be in considerable trouble as well."
"If you keep me, you will not need to reveal your strength so