Yin Sha Qi. Although it isn't Demonic Qi, it has a similar effect, strengthening a Malicious Ghost's cultivation level and ferocity.
It was the Day of Sanniang's Calamity, during the zishi hour of the seventh day after death. Nie Linglan had already absorbed a great deal of Yin Sha Qi, relying solely on the compassion she held in life to suppress her bloodthirsty, murderous intent. But now, as tenfold, even a hundredfold more Yin Sha Qi flooded her body, the fierce nature she had been forcibly restraining began to surge. Her grip on reason was teetering on the edge of collapse.
"Second Brother, wake up!"
Seeing Li Longji starting to doze off again, Li Longyou pulled out a silver awl and jabbed it into his buttock.
AARGH!
The latter let out a scream as his drowsiness vanished completely.
Li Longyou wielded his twin swords, Yin-Yang Energy swirling with the dance of their blades. The energy formed an endlessly circulating Taiji Bagua pattern.
