The peak of all realms!
These words are spoken with great emphasis by Nuwa, as if intentionally telling Su Han that choosing this condition offers greater benefits to himself than choosing to revive Little Qing.
And does Su Han not already know?
The peak of all realms signifies his fleshly cultivation, martial path cultivation, magic cultivation...
His fleshly cultivation is already at the Dragon God Realm Peak; if he breaks through further, he'd become a Dragon Emperor.
His martial path cultivation is still at the Dragon God Realm Early Stage, but if Nuwa assists him, he could directly reach the Dragon God Realm Peak!
In other words, if Su Han genuinely chooses this condition, then Nuwa could even aid him in condensing the Six Paths Primal Spirit that hasn't yet been formed!
As for magic cultivation, he is a First Order Grand Mage. Reaching the peak of this realm would make him a Seventh-Order Grand Magister, just a step away from becoming a Magic Saint!