"This is…" feeling the things happening inside her body, Hong Lian couldn't help but feel surprised, the fact that she can't even mobilize her spirit and soul making her feel really weak and vulnerable given how less she cultivates her body.
The same thing can not really be said when it comes to Astaria though, being a martial artist before she is a cultivator, the body is her main weapon, a concept of self that she had carried through even when transitioning to become a cultivator, not allowing a single day pass that she don't exert her physical body without using any spirit qi at all.
What is even more surprising when it comes to this Heaven Severing Sand is its diminished effects when it comes to Su Xiaotian, who is clearly quite surprised as well given that even in his memories of the past timeline, this sand is still something that affects him quite significantly even when he already awakens his three talents.