It's good that the Blood Demon Venerable Master has fled, Nie Shuangshuang won't have to worry about dealing with him, and can focus on the demon that is about to emerge.
Earlier, the demon's attack-laden howl had cleared away the surrounding Yin Soul Wraiths and Evil Cultivators, allowing Nie Shuangshuang to fully confront it.
All the Thousand Silk Entanglements headed toward the black vortex, hooking onto its edges and forcefully contracting inward. This isn't a foolish method by Nie Shuangshuang; it's simply that the vortex cannot be sealed by other means.
The summoning glyphs for demons are very demanding, linking two dimensions, and crafting summoning runes that can summon such a powerful demon is no easy task.
Previously, the mouthful of heart's blood that the Blood Demon Venerable Master spewed wasn't ordinary heart's blood — regular heart's blood wouldn't cause him to turn pale and age.
