The higher-ranking and more powerful a magic beast was, the more it could suppress those of lower rank.
Even if the Divine Flood Dragon was only a corpse, as long as its remnant soul siphon remained, it still had to submit to a higher-ranking magic beast.
If Sikong Jing released the aura of the Lord of Ten Thousand Beasts, it would be even easier...
But to avoid possibly alerting the Flame Prison Heavenly Emperor and so on, Sikong Jing did not release it.
He merely used the aura of the Blood Devour Magic Beast to sense the Divine Flood Dragon's inner core and merge with the Divine Flood Dragon's soul siphon. When the fusion was complete, he felt the power of the Evil Crescent River spreading across the entire Crescent Moon Continent.
Why could the Evil Crescent River be drawn out into a rushing flow?
Ling Zhixin had already answered that question. It was because the power of the Evil Crescent River had always blanketed the entire Crescent Moon Continent.
It simply could not normally be sensed, like dust in the air.
But once the power of the Evil Crescent River was refined into a crystal and energy was released from it, it would be touched by the omnipresent power of the Evil Crescent River. Then, the Evil Crescent River would draw the crystal back in...
That was precisely what Ling Zhixin had done in the Straight Wind Palace Complex...
When Sikong Jing opened the cell door, the "Evil Crescent River Crystal" on Ling Zhixin's body was triggered and released, staining Sikong Jing, Luo Guangmang, and the others with its energy.
The result was that the Evil Crescent River would swallow all the energy released from the crystal back in.
To put it plainly...
The Divine Flood Dragon soul's siphon