These two qualities were indispensable.
Coincidentally, Jiang Chengxuan and Shen Ruyan were probably the best in the Nine Essences World in terms of aptitude.
Especially Jiang Chengxuan. In the entire cultivation world of the Nine Essences, who else could condense a Zenith Nascent Soul other than him?
Not to mention his background and aptitude that had been upgraded by the system many times.
He was not something any cultivator could compare to.
As for Shen Ruyan…
Not to mention her Flawless Nascent Soul aptitude, just the fact that she was the Heavenly Lord Thunder Matriarch in her previous life, her aptitude was definitely not bad.
So.
From a certain point of view, there was indeed no one more suitable to cultivate this Heart Inquiry Sword than them.
Heavenly Lord Xuan Yang must have guessed their background, which was why he handed this divine power to them at this moment.