Sure, here is the translation based on the given guidelines:
...
In the pitch-black underground, a luminescent white glow slowly rose.
At the center of the glow, Ruan Qi held the breathless Xi Jiu, her forehead tightly pressed against his.
Countless Faith values transformed into Spiritual Power, surging from her body and continuously entering Xi Jiu's Sea of Consciousness.
In the System bound to Ruan Qi, the crystal column carrying the Faith values emptied swiftly at a speed visible to the naked eye.
This meant her life was also rapidly being drained to zero.
Ruan Qi's face grew paler, her bloodless lips nearly transparent.
Bai Li, hovering in mid-air, looked on with empathy: "Qi Yatou, you still have time to regret now."
Ruan Qi was too weak to speak, simply shaking her head with effort, silently mouthing two words—
No Regret.
