Ling Tian was a little worried that Chi Xue and Po Tian might consume Phoenix Soul Fruits and be reborn through nirvana. That would directly solve the problem of their cultivation realms being stuck, allowing them to keep growing stronger at a rapid pace—much faster than Ling Tian and the others. That meant Chi Xue and his allies could once again pose a tremendous threat to them.
With Ling Tian's intelligence, he could naturally tell that if Po Tian and the other man consumed Phoenix Soul Fruits and were reborn through nirvana, Shi Lin and the others might do the same. That would pose an even greater threat to Ling Tian and his allies. Even if he managed to set up the Myriad Sword Demon Extermination Grand Formation, it might not be enough to suppress their opponents. If that happened, he and Little Swallow would be in danger—especially Little Swallow.
If Chi Xue and the others didn't consume Phoenix Soul Fruits and undergo nirvana rebirth, Ling Tian and Little Swallow would have a chance to surpass them in cultivation. At the very least, they had plenty of time to make that happen. Once their cultivation realms surpassed Chi Xue's and Po Tian's, even if the two later consumed Phoenix Soul Fruits, were reborn through nirvana, and practiced the Nine Reversals Heavenly Technique, they would pose far less of a threat. After all, by then Ling Tian and Little Swallow would be at much higher cultivation levels than in the first scenario. A higher realm would also help them handle all kinds of situations. This was especially true for Ling Tian: a higher cultivation realm meant his Small World would grow much larger, giving him an advantage when facing Chi Xue and the others.
That was precisely why Ling Tian had