Zombie Sister was crying.
The ancient corpse that couldn't be awakened even by a cannon shot was pretending to be young. Chen Xuantian shivered and rolled his eyes,
"Alright, alright, we'll buy you some candied haws when we get to town."
Candied haws seemed to work; Zombie Sister immediately stopped crying and pointed,
"There's a village over there."
So Chen Xuantian wrapped his tentacles around her, carried Zombie Sister on his back, and rose with Qi Manipulation, kicking up a black wind, transforming into Crane Wings to soar.
The refining of the Netherworld Spring indeed added an extra step to using Qi, turning the True Qi black, but it was still perfectly usable.
It's mostly in high-end Mystic Sect sword fighting where the mantra for Qi Manipulation might lag a bit, which could be a weakness. However, unless hit by battleship-grade Daoist Skills, it shouldn't break the Nether Spring Path, making the flaw non-lethal.
