Smashing the Blood Lotus Crown Prince
After Qi Wugou—also known as "Mie Jiudi"—left, he immediately moved far away from the Bliss Grand Hall, tunneling underground until he reached a hidden location.
He cast his magic power to seal off a space, then set up a massive altar within it.
"Mie Jiudi" was an underworld yin marshal, as well as an Other Shore spy planted in the Red Lotus Hell. His worth was considerable, and he truly carried quite a few fine things. Numerous treasures of unknown origin, likely plundered from somewhere, were used to construct this altar.
Many blood-red streamers stood arrayed around the altar, covered in strange tadpole-like writing and runes. At the same time, these long strips of cloth fluttered in the air, joining with the enormous altar at the center to form what seemed to be a ritual ground.
"Light of heaven, light of earth; day and night without light. Gods and Buddhas carve their own paths; ten thousand evils shall not perish."
Qi Wugou recited an exceedingly bizarre incantation. This was a demonic and wicked art recorded in the Nether Zhenyu Naraka Sutra. Such methods were profoundly sinister, able to use puppets and mediums to grievously wound one's enemies across immense distances.
He intended to ambush the Blood Lotus Crown Prince, but he could not act personally, because the Blood Lotus Crown Prince was the most favored son of the Red Lotus World-Purifying King.
The Blood Lotus Crown Prince had to die, but his death could not be too obvious. Better that he died without anyone knowing; only then would it avoid affecting Qi Wugou's incarnation—in other words, "Mie Jiudi."
Of course, even if Mie Jiudi were discovered, it would not affect the overall situation. So long as the blame could be thrown onto Other Shore