Unless this person's cultivation can surpass He Song by a large realm.
Otherwise, even if this person truly breaks through to the Divinity Transformation Realm, they will still live under He Song's control.
And this effect is also the most powerful effect of the Ten Thousand Tribulations Slave Soul Contract.
Ordinary secret skills used to control others generally cannot be used to control cultivators of the same level.
Just like a Deity Transforming cultivator controlling a Nascent Soul cultivator, and a Nascent Soul cultivator controlling a Golden Elixir cultivator.
Only when the cultivation of both parties differs by a large realm can such a secret skill, used to control others, normally take effect.
But once the side being controlled has a breakthrough in cultivation, successfully raising their cultivation by a large realm.
Then the person who could originally control them perfectly.