Because only by successfully crossing the threshold of the Sitting and Illuminating Realm and surviving can one be valued by the Upper Realm.
So the matter of the Divine Intent Sect... is not a big deal with the Sect Leader and others covering for it.
What he worries about most is the exposure of his identity as a Possessor.
But now he can only gamble.
Gamble that Yin Su, for her own innocence, will focus specifically on investigating the memories of cooperation with the Wuji Demon Sect, thereby overlooking the lingering flaws on his Divine Soul.
With this thought, he closed his eyes: "Mother, I have a clear conscience."
Yin Su responded with a 'hmph', having incurred the Seventh Miss's displeasure, though she didn't understand why the Seventh Miss was so docile towards Lu Jin'an, now she could only dedicate herself to the matter concerning Yang Guan.
The whole Yin Family must not be implicated!